Mercedes-Benz Tire Guide: OEM Sizes, MO/MOE, AMG Fitment, PSI & Upgrades
OEM sizes for 12 model families, MO/MOE explained, staggered fitment rules, PSI by model, run-flat trade-offs, and brand comparisons.
If you own a Mercedes-Benz and need to buy new tires, it is not as simple as typing your car into a tire website and picking the cheapest option. Between MO and MOE markings, staggered fitments on AMG models, run-flat requirements, TPMS sensors, and model-specific sizing quirks, there is a lot to get wrong.
This guide covers all of it in one place: OEM sizes for 12 model families, PSI by model, run-flat vs conventional trade-offs, staggered fitment rules, brand comparisons, and answers to the questions Mercedes owners actually ask.
What Do MO and MOE Mean on a Mercedes Tire?
MO stands for Mercedes Original — the tire has been developed and approved specifically for Mercedes-Benz vehicles, tested for handling, noise, wet grip, and acoustic properties matched to the suspension tuning of specific models.
MOE stands for Mercedes Original Extended — everything MO includes, plus run-flat capability via a reinforced sidewall that allows driving up to 50 miles at no more than 50 mph after a puncture.
Does It Actually Matter?
If your Mercedes came with MOE tires and no spare wheel, you need to stay with run-flat tires unless you deliberately switch and carry a puncture repair kit. For MO (non-run-flat) cars, the approval influences handling tuning and noise — you can fit non-approved tires and most owners never notice a problem.
Can You Fit Non-MO Tires?
Yes. There is no mechanical barrier. MO and MOE are recommendations and fitment optimisations, not hard technical requirements. Many owners run Michelin, Bridgestone, or Continental tires without MO markings without issue. The practical consideration is run-flat capability on cars without a spare.
OEM Tire Sizes for Every Major Mercedes-Benz Model
Common OEM and factory-option tire sizes across 12 major model families. Where a model offers staggered fitment, both front and rear sizes are listed.
C-Class (W205, W206)
Most C-Class models from 2015 onward ship without a spare. MOE run-flat tires are factory spec on most trims.
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| C 180 / C 200 Base | 225/55 R17 | 225/55 R17 | 17" | MO, symmetric |
| C 300 Base | 225/50 R17 | 225/50 R17 | 17" | MO |
| C 300 Sport | 235/40 R18 | 235/40 R18 | 18" | MO |
| C 300 AMG Line | 235/40 R18 | 255/35 R18 | 18" | Staggered, MO |
| C 43 AMG | 235/40 R18 | 255/35 R18 | 18" | Staggered, MO |
| C 63 AMG | 245/35 R19 | 265/30 R19 | 19" | Staggered, summer |
| C 63 S AMG | 245/35 R19 | 265/30 R19 | 19" | Staggered, high perf |
E-Class (W213, W214)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| E 200 / E 220 Base | 235/55 R17 | 235/55 R17 | 17" | MO |
| E 300 Base | 235/50 R18 | 235/50 R18 | 18" | MO |
| E 300 AMG Line | 245/40 R18 | 245/40 R18 | 18" | MO |
| E 450 AMG Line | 245/40 R19 | 275/35 R19 | 19" | Staggered, MO |
| E 53 AMG | 255/35 R19 | 285/30 R19 | 19" | Staggered, summer |
| E 63 AMG | 255/35 R20 | 285/30 R20 | 20" | Staggered, high perf |
S-Class (W222, W223)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| S 450 Base | 245/50 R18 | 245/50 R18 | 18" | MO, comfort focus |
| S 450 AMG Line | 245/45 R19 | 275/40 R19 | 19" | Staggered, MO |
| S 580 | 255/40 R20 | 285/35 R20 | 20" | Staggered, MO |
| S 63 AMG | 265/35 R20 | 295/30 R20 | 20" | Staggered, summer |
| Maybach S-Class | 245/50 R19 | 275/45 R19 | 19" | Comfort/luxury spec |
GLC (X253, X254)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| GLC 200 / 300 Base | 235/55 R18 | 235/55 R18 | 18" | MO, all-season available |
| GLC 300 AMG Line | 235/50 R19 | 235/50 R19 | 19" | MO |
| GLC 300 20" Package | 255/45 R20 | 255/45 R20 | 20" | MO |
| GLC 43 AMG | 255/45 R20 | 285/40 R20 | 20" | Staggered, summer |
| GLC 63 AMG | 265/40 R21 | 295/35 R21 | 21" | Staggered, high perf |
GLE (W166, V167)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| GLE 300d / 350 Base | 265/50 R19 | 265/50 R19 | 19" | MO, all-terrain opt. |
| GLE 350 AMG Line | 265/45 R20 | 265/45 R20 | 20" | MO |
| GLE 53 AMG | 265/45 R20 | 295/40 R20 | 20" | Staggered |
| GLE 63 AMG | 285/40 R22 | 325/35 R22 | 22" | Staggered, summer |
GLS (X166, X167)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| GLS 450 Base | 275/55 R19 | 275/55 R19 | 19" | MO, load range |
| GLS 450 AMG Line | 275/50 R20 | 275/50 R20 | 20" | MO |
| GLS 580 | 275/45 R21 | 275/45 R21 | 21" | MO |
| GLS 63 AMG | 285/40 R22 | 325/35 R22 | 22" | Staggered, summer |
| Maybach GLS 600 | 285/45 R22 | 285/45 R22 | 22" | Symmetric, comfort spec |
CLA (C117, C118)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| CLA 200 / 250 Base | 225/45 R17 | 225/45 R17 | 17" | MO |
| CLA 250 Sport | 235/40 R18 | 235/40 R18 | 18" | MO |
| CLA 45 AMG | 235/35 R19 | 255/30 R19 | 19" | Staggered, summer |
| CLA 45 S AMG | 245/35 R19 | 265/30 R19 | 19" | Staggered, high perf |
GLA (X156, H247)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| GLA 200 / 250 Base | 215/60 R16 | 215/60 R16 | 16" | MO |
| GLA 250 Sport | 235/45 R18 | 235/45 R18 | 18" | MO |
| GLA 45 AMG | 235/40 R19 | 255/35 R19 | 19" | Staggered, summer |
GLB (X247)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| GLB 200 / 250 Base | 235/55 R18 | 235/55 R18 | 18" | MO |
| GLB 250 AMG Line | 235/50 R19 | 235/50 R19 | 19" | MO |
| GLB 35 AMG | 235/45 R20 | 255/40 R20 | 20" | Staggered |
A-Class (W176, W177)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| A 180 / A 200 Base | 205/60 R16 | 205/60 R16 | 16" | MO |
| A 250 Sport | 225/45 R18 | 225/45 R18 | 18" | MO |
| A 35 AMG | 235/40 R18 | 255/35 R18 | 18" | Staggered |
| A 45 AMG | 235/35 R19 | 255/30 R19 | 19" | Staggered, summer |
| A 45 S AMG | 245/35 R19 | 265/30 R19 | 19" | Staggered, high perf |
SL (R231, R232)
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| SL 43 / SL 55 Base | 255/40 R19 | 285/35 R19 | 19" | Staggered, summer |
| SL 63 AMG | 265/35 R20 | 295/30 R20 | 20" | Staggered, high perf |
| SL 63 AMG 21" opt. | 275/30 R21 | 305/25 R21 | 21" | Staggered, summer |
EQS (V297)
EQS models weigh 2,600 kg+. Always confirm load index when replacing. OEM-spec or EV-rated replacements strongly recommended.
| Trim | Front | Rear | Wheel | Notes |
|---|---|---|---|---|
| EQS 450+ Base | 235/55 R19 | 235/55 R19 | 19" | MO, low rolling resist. |
| EQS 450+ AMG Line | 265/40 R21 | 265/40 R21 | 21" | MO, symmetric EV spec |
| EQS 580 4MATIC | 265/40 R21 | 295/35 R21 | 21" | Staggered, MO |
| EQS 53 AMG 4MATIC+ | 265/35 R22 | 295/30 R22 | 22" | Staggered, summer perf |
Staggered Fitment on Mercedes-Benz — What You Need to Know
A staggered fitment means the rear tires are wider than the front tires. On AMG models and performance-line trims this is intentional — wider rears improve traction under acceleration, match rear-biased power distribution, and improve cornering balance.
The Rotation Problem
On a staggered fitment you cannot rotate tires front-to-rear — the rear tire is physically too wide. Rear tires wear faster with no way to share that wear. Many AMG owners replace rears every 15,000 to 20,000 miles while fronts last 30,000 miles or more. That is normal, not a fault. Check rear tread depth separately at every service.
4MATIC and Diameter Tolerance
Mercedes-Benz recommends keeping front and rear tire diameters within approximately 1.5% of each other on 4MATIC models. A meaningful diameter mismatch is interpreted as a continuous slip condition, putting sustained stress on the transfer case and front differential. Always confirm diameter differences using the Mercedes Tire Size Calculator before ordering.
Can You Switch to a Square Fitment?
Some owners on staggered RWD (non-4MATIC) cars switch to a square fitment to regain rotation ability and reduce tire costs. This changes handling balance and reduces the wider rear-biased feel AMG tuning was designed around. A legitimate choice for daily drivers who prioritise economy. Do not attempt on a 4MATIC model without confirming diameter match first.
Correct Tire Pressure for Mercedes-Benz — By Model Family
The sticker inside the driver's door jamb is always the primary source. All figures below are cold inflation pressure.
| Model | Tire Example | Front | Rear | Notes |
|---|---|---|---|---|
| C-Class (base) | 225/50 R17 | 33 | 33 | MO, standard load |
| C-Class (AMG Line) | 235/40 R18 stag. | 35 | 38 | Staggered, check door jamb |
| C 63 AMG | 245/35 R19 stag. | 36 | 40 | Summer tires, higher rear |
| E-Class (base) | 235/55 R17 | 33 | 33 | Standard load, comfort spec |
| E-Class (AMG Line) | 245/40 R19 stag. | 35 | 38 | Staggered |
| E 63 AMG | 255/35 R20 stag. | 36 | 41 | High perf, check jamb |
| S-Class (base) | 245/50 R18 | 33 | 33 | Comfort-biased, heavy car |
| S-Class (staggered) | 255/40 R20 stag. | 35 | 38 | Check door jamb always |
| GLC | 235/55 R18 | 33 | 33 | All-season available |
| GLC (AMG Line) | 235/50 R19 | 35 | 35 | Sport spec |
| GLE | 265/50 R19 | 36 | 36 | SUV load rating |
| GLE 63 AMG | 285/40 R22 stag. | 37 | 41 | Very wide rear, check jamb |
| GLS | 275/55 R19 | 36 | 36 | 3-row SUV, heavier load |
| CLA | 225/45 R17 | 33 | 33 | Compact, standard load |
| A-Class | 205/60 R16 | 32 | 32 | Entry model, lighter car |
| EQS (EV) | 235/55 R19 | 38 | 38 | Higher PSI for EV weight |
| EQS 53 AMG | 265/35 R22 stag. | 39 | 42 | Very heavy EV, check jamb |
Three rules that matter more than any table
- Door jamb sticker first — reflects your exact trim, wheel size, and load spec.
- Measure cold — driving raises pressure 4–6 PSI; checking warm causes chronic under-inflation.
- Adjust for load — many models specify a higher rear pressure for passengers and cargo, noted on the door jamb as a secondary figure.
TPMS after inflation: Direct TPMS on all current models (W205 onward) updates automatically within a few miles. After fitting new wheels, register sensors via COMAND / MBUX: Vehicle > Tire Pressure Monitor > Restart. If the warning light persists, any TPMS-equipped shop can register sensors in under 30 minutes.
Run-Flat vs Conventional Tires on a Mercedes — The Full Trade-Off
Most current Mercedes-Benz models leave the factory without a spare wheel. Run-flat tires make this possible — if you get a puncture, you can keep driving for up to 50 miles at up to 50 mph to reach a repair shop.
Run-Flat Downsides
- Ride comfort: Stiffer sidewall means a noticeably harsher ride on standard spring suspension. AIRMATIC cars handle this better.
- Cost: Typically 20–40% more than equivalent conventional tires.
- Repairability: A run-flat driven on while flat is often not repairable — sidewall damage is invisible.
- Availability: Specific run-flat sizes can be harder to source quickly in some regions.
Switching to Conventional (C 300 Example)
- Confirm the boot has no spare wheel well.
- Get a puncture backup plan — repair kit plus roadside assist subscription is the most practical.
- Choose your tire: Michelin Primacy 4, Continental PremiumContact 7, or Pirelli Cinturato P7 are strong choices.
- Same wheels: existing TPMS sensors stay. New wheels: sensors need registration.
- Check pressures more regularly without run-flat capability.
Best Tire Brands for Mercedes-Benz — 2025 Comparison
All-Season Tires
| Tire | Brand | Wet Grip | Comfort | MO? |
|---|---|---|---|---|
| CrossClimate 2 | Michelin | Excellent | High | No |
| AllSeasonContact 2 | Continental | Excellent | High | Yes (MO) |
| Cinturato All Season SF2 | Pirelli | Very Good | High | Yes (MO) |
| Turanza All Season 6 | Bridgestone | Very Good | High | No |
Best overall all-season: Michelin CrossClimate 2 or Continental AllSeasonContact 2. The Continental has MO availability on many common sizes.
Summer / Performance Tires
| Tire | Brand | Dry Grip | Wet Grip | MO? |
|---|---|---|---|---|
| Pilot Sport 4S | Michelin | Excellent | Excellent | Yes (MO) |
| P Zero (PZ4) | Pirelli | Excellent | Very Good | Yes (MO/MOE) |
| SportContact 7 | Continental | Excellent | Excellent | Yes (MO) |
| Potenza Sport | Bridgestone | Very Good | Very Good | No |
For AMG models: Michelin Pilot Sport 4S and Pirelli P Zero PZ4 are factory-spec on most AMG lines and consistently top 2025 independent test results. Continental SportContact 7 is a strong challenger, particularly in wet braking.
Winter Tires
| Tire | Brand | Snow | Wet | MO? |
|---|---|---|---|---|
| Pilot Alpin 5 | Michelin | Excellent | Excellent | Yes (MO) |
| WinterContact TS 870 P | Continental | Excellent | Excellent | Yes (MO) |
| Sottozero 3 | Pirelli | Very Good | Very Good | Yes (MO/MOE) |
| Blizzak LM005 | Bridgestone | Very Good | Very Good | No |
Comfort models (S-Class, EQS): Michelin Pilot Alpin 5 or Continental WinterContact TS 870 P. AMG models: Pirelli Sottozero 3 in MO/MOE spec. If you use winter tires for 4+ months per year, a dedicated set of winter wheels with TPMS sensors is the smarter long-term decision.
Plus Sizing on a Mercedes — What Works and What to Watch
Plus sizing means fitting a larger wheel diameter while reducing the tire sidewall to keep overall diameter close to stock. The key rule: keep overall diameter within 1.5% to 2% of original. Go outside that range and your speedometer reads incorrectly, ADAS systems may behave less accurately, and on some models the gearbox shift mapping is affected.
Why owners plus-size
- Improved steering response and lateral stiffness
- Better cornering feel on performance models
- More aggressive visual stance
- Wider aftermarket tire choice at common sizes
Trade-offs to expect
- Harsher ride on rough surfaces
- Greater pothole and kerb damage risk
- On spring-suspended C-Class, 19" starts to feel noticeably firmer; AIRMATIC SUVs handle 20"–21" better
| Original Size | +1 Step | +2 Step | Notes |
|---|---|---|---|
| 225/55 R17 | 235/45 R18 | 245/40 R19 | C-Class base, check clearance |
| 235/50 R18 | 245/40 R19 | 255/35 R20 | E-Class base step |
| 245/50 R18 | 255/40 R19 | 265/35 R20 | S-Class base step |
| 235/55 R18 | 255/45 R19 | 255/40 R20 | GLC base step |
| 265/50 R19 | 265/45 R20 | 275/40 R21 | GLE base step |
| 275/55 R19 | 275/50 R20 | 275/45 R21 | GLS base step |
TPMS on Mercedes-Benz — Winter Wheels and Sensor Registration
Mercedes-Benz uses direct TPMS on all current models. Each wheel contains a physical pressure sensor. When you fit wheels the car has not seen before, sensors are not yet registered and the TPMS warning light will illuminate — even at correct pressure.
Registering new sensors (W205 / W213 / X253 / V167)
Inflate to correct pressure, then use MBUX or COMAND: Settings > Vehicle > Tires > Restart Tire Pressure Monitoring. Drive above 25 mph for 10–15 minutes. If the light stays on after 20 minutes, a TPMS tool is needed — most shops complete registration in under 30 minutes.
Winter wheel buying checklist
- Confirm bolt pattern (most Mercedes: 5×112)
- Confirm center bore (typically 66.6 mm)
- Hub-centric rings included for aftermarket wheels
- Compatible TPMS sensors included and registration booked
- Wheel offset (ET) within ±5 mm of OEM
- Winter tire size keeps overall diameter within 1.5% of summer size
Load Index, Speed Rating & XL Tires
Speed Rating
| Rating | Max Speed | Typical Use |
|---|---|---|
| H | 210 km/h | Base models, comfort SUVs |
| V | 240 km/h | C/E/GLC base |
| W | 270 km/h | Sport/AMG Line |
| Y | 300 km/h | AMG models |
Never fit a tire with a lower speed rating than OEM spec. An H-rated tire on a W or Y spec car is a structural safety concern at highway speeds.
Load Index Reference
| Index | Max Load / Tire |
|---|---|
| 91 | 615 kg |
| 94 | 670 kg |
| 97 | 730 kg |
| 100 | 800 kg |
| 103 | 875 kg |
| 107 | 975 kg |
| 111 | 1,090 kg |
When to Replace Mercedes-Benz Tires — Age, Tread & Wear Signs
Reading the DOT Date Code
The last four digits of the DOT code are the week and year of manufacture. Example: 2423 = week 24 of 2023 = June 2023.
Mercedes-Benz recommends replacing tires at 6 years old regardless of tread depth. At 10 years, replacement is mandatory even if the tire looks unused.
Tread Depth Thresholds
- EU legal minimum: 1.6 mm
- Recommended replacement: 3 mm — wet braking degrades significantly below this
- New tire depth: 7–8 mm (up to 9 mm on winter/all-season)
At 1.6 mm, wet stopping distances can be 20–30% longer than at 3 mm at 80 km/h. Treat 3 mm as your real-world threshold.
Replace immediately if you see:
- Sidewall cracks or crazing
- Bulges or blisters on the sidewall
- Cuts or punctures in the sidewall (never repairable)
- Uneven wear across the tread width
- Tread wear bars visible (1.6 mm reached)
- Vibration or pulling with no suspension change
Mercedes-Benz Tire FAQ
For quick size comparison, speedometer error, and diameter checks before ordering, use the Mercedes Tire Size Calculator.
Open Mercedes Tire Size Calculator →Disclaimer
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