225/50 R17
Available 
ContiPremiumContact 2 225/50 R17 98V Summer
from £128.99-£199.24.
£128.99-£199.24
Tyre sizes tracked: 225/50 R17 98V
Vehicle tyre fitment guide
2018 Mercedes-Benz C-Class tyres
Compare exact-match summer tyres for the 2018 Mercedes-Benz C-Class by researched size, then check your current sidewall, vehicle placard, stock and delivery before ordering.
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Last verified: 2026-06-19
2018 Mercedes-Benz C-Class fitment summary
The researched tyre sizes for this 2018 Mercedes-Benz C-Class guide are 225/50 R17, 225/45 R18, 245/40 R18, 225/40 R19, 255/35 R19. Some Mercedes-Benz C-Class wheel packages use staggered front and rear sizes. Confirm front and rear sidewall sizes separately before ordering. Fitment source checked: 1.
225/50 R17225/45 R18245/40 R18225/40 R19255/35 R19
Tyres grouped by 2018 Mercedes-Benz C-Class size
Only Tyres.net products whose listed size exactly matches one of the researched 2018 Mercedes-Benz C-Class tyre sizes are shown here. Check load index, speed rating, season and run-flat notes before buying.
225/45 R18
Available 
Cinturato P7 (P7C2) 225/45 R18 95Y Summer
from £125.83-£170.59.
£125.83-£170.59
Tyre sizes tracked: 225/45 R18 95Y
Available 
EcoContact 6 225/45 R18 95Y Summer
from £124.81-£191.39.
£124.81-£191.39
Tyre sizes tracked: 225/45 R18 95Y
Available 
ContiSportContact 5 225/45 R18 95Y Summer
from £125.12-£228.90.
£125.12-£228.9
Tyre sizes tracked: 225/45 R18 95Y
255/35 R19
Available 
ContiSportContact 5 P 255/35 ZR19 96Y Summer
from £130.41-£282.84.
£130.41-£282.84
Tyre sizes tracked: 255/35 ZR19 96Y
Matching Tyres.net options
Start with Cinturato P7 (P7C2) 225/45 R18 95Y Summer (£125.83-£170.59), ContiPremiumContact 2 225/50 R17 98V Summer (£128.99-£199.24), ContiSportContact 5 P 255/35 ZR19 96Y Summer (£130.41-£282.84); each is included because its Tyres.net listed size matches a researched 2018 Mercedes-Benz C-Class tyre size. This is not a claim that every trim uses the same size. Confirm the current sidewall, load index and speed rating before ordering. Use season, stock, delivery terms and price as secondary filters after size fitment.
Available
Cinturato P7 (P7C2) 225/45 R18 95Y Summer
from £125.83-£170.59.
£125.83-£170.59
Tyre sizes tracked: 225/45 R18 95Y
Available
ContiPremiumContact 2 225/50 R17 98V Summer
from £128.99-£199.24.
£128.99-£199.24
Tyre sizes tracked: 225/50 R17 98V
Available
ContiSportContact 5 P 255/35 ZR19 96Y Summer
from £130.41-£282.84.
£130.41-£282.84
Tyre sizes tracked: 255/35 ZR19 96Y
Available
EcoContact 6 225/45 R18 95Y Summer
from £124.81-£191.39.
£124.81-£191.39
Tyre sizes tracked: 225/45 R18 95Y
Available
ContiSportContact 5 225/45 R18 95Y Summer
from £125.12-£228.90.
£125.12-£228.9
Tyre sizes tracked: 225/45 R18 95Y
At-a-glance fitment comparison
The table is filtered to researched tyre sizes: 225/50 R17, 225/45 R18, 245/40 R18, 225/40 R19, 255/35 R19. Compare the listed size against the current tyre sidewall first, then check load/speed rating, season and run-flat notes. Products outside those researched sizes are deliberately excluded from this vehicle shortlist.
| Product | Type | Season | Tyre sizes | From |
|---|---|---|---|---|
| Cinturato P7 (P7C2) 225/45 R18 95Y Summer | Car tyre | Summer | 225/45 R18 95Y | £125.83 |
| ContiPremiumContact 2 225/50 R17 98V Summer | Car tyre | Summer | 225/50 R17 98V | £128.99 |
| ContiSportContact 5 P 255/35 ZR19 96Y Summer | Car tyre | Summer | 255/35 ZR19 96Y | £130.41 |
| EcoContact 6 225/45 R18 95Y Summer | Car tyre | Summer | 225/45 R18 95Y | £124.81 |
| ContiSportContact 5 225/45 R18 95Y Summer | Car tyre | Summer | 225/45 R18 95Y | £125.12 |
What the fitment research shows
This shortlist is built around exact 2018 Mercedes-Benz C-Class tyre sizes, not a single universal fitment for every car in the range. The researched sizes are 225/50 R17, 225/45 R18, 245/40 R18, 225/40 R19 and 255/35 R19, and some wheel packages use staggered front and rear sizes, so each axle may need a separate check. All five shortlisted tyres are summer tyres from Continental or Pirelli, which makes this a useful summer-use compare set rather than a year-round recommendation. Always confirm your current sidewall or vehicle placard before ordering.
The main trade-offs on this shortlist
The current shortlist sits in a relatively tight price band, roughly £124.81 to £282.84, so price alone is not the best way to narrow it down. The real decision is whether you need a 17-inch, 18-inch or 19-inch match, and whether you prefer a touring-leaning summer tyre such as the Pirelli Cinturato P7 (P7C2) 225/45 R18 95Y Summer or a sportier Continental option such as ContiSportContact 5 225/45 R18 95Y Summer and ContiSportContact 5 P 255/35 ZR19 96Y Summer. Because live stock and delivery details still need checking at purchase time, treat the current price as a starting point and confirm the retailer page before you buy.
How to choose the right tyre for your C-Class
Start with the size on the tyre sidewall, then confirm the vehicle placard and only then compare retailer listings. If the car has staggered wheels, match front and rear sizes separately rather than assuming both axles use the same tyre. Once the size is confirmed, compare the load index and speed rating shown on the tyre sidewall and the listing: for example, the shortlist includes 225/45 R18 95Y options such as the Pirelli Cinturato P7 (P7C2), Continental EcoContact 6 and Continental ContiSportContact 5, plus 225/50 R17 98V and 255/35 ZR19 96Y options. Also check any run-flat marking if your current tyres are run-flat. That order matters more than brand or price, because an exact-size tyre with the wrong rating is not the right purchase.
Why the same model can need different sizes
A 2018 Mercedes-Benz C-Class can wear different tyre sizes depending on trim, wheel option and market, so the model name alone is only a starting point. Mercedes wheel packages can also be staggered, which means the front tyres may differ from the rear tyres even though they sit on the same car. That is why this page only shows tyres that exactly match one of the researched sizes and does not suggest nearby sizes or replacements. If your current sidewall does not match one of the listed sizes, stop and re-check the placard or handbook before ordering.
How to compare tyre specifications once size is confirmed
After the size match, compare the load index and speed rating shown on the tyre sidewall and the retailer listing, because those details are part of the fitment check. Some C-Class fitments may also involve run-flat tyres, so if your current tyres are marked run-flat, confirm that the replacement is the same type before ordering. On this shortlist, the visible options are all summer tyres, so the seasonal choice is already fixed; what still varies is size, brand, exact rim fit and the price you see today. The retailer pages checked for these tyres were not fully readable, so verify the latest listing detail, stock and delivery terms directly before checkout.
Why this shortlist is useful, but not the whole market
These five tyres are a practical compare set because they cover several confirmed C-Class sizes and two familiar brands, Continental and Pirelli. The 225/45 R18 group is the most useful for side-by-side comparison because it includes the Pirelli Cinturato P7 (P7C2) 225/45 R18 95Y Summer, Continental EcoContact 6 225/45 R18 95Y Summer and Continental ContiSportContact 5 225/45 R18 95Y Summer, giving you a clear comfort-versus-sporty split within one size. Even so, the shortlist has no visible public star ratings or review counts, so it should be used as a fitment-first filter rather than a proof of real-world performance.
Where the value lies
The best value here is the tyre that matches your exact size and rating at a sensible current price, not the cheapest listing by itself. The Pirelli Cinturato P7 (P7C2) 225/45 R18 95Y Summer starts from £125.83, while the Continental EcoContact 6 225/45 R18 95Y Summer starts from £124.81, so the lower end of the shortlist is close enough that size fitment and use case matter more than the small price gap. The more performance-focused ContiSportContact 5 P 255/35 ZR19 96Y Summer sits at the top of the current range, which is useful if you are matching a 19-inch staggered setup and want to compare sportier summer choices. Check current stock, delivery cost and the latest retailer price before ordering, because those can change even when the size match stays the same.
Retailer details used
Last checked 2026-06-19. The source list below is included to help you check the details behind the comparison. Always confirm the latest price, delivery cost, stock status and product details with the retailer before buying.
- Vehicle tyre-size fitment sourcevehicle tyre-size fitment research; products are selected from exact matching Tyres.net listed sizes
- Mercedes-Benz C300 2018 Car Tires | Michelin USAVehicle-specific fitment context and multiple rim sizes
- Mercedes-Benz C300 2018 225/50R17 94H Tire Search | Michelin USAExample of fitment-specific tyre selection and front/rear fitment presentation
- CINTURATO P7 225/45R18 | PirelliComfort/efficiency feature descriptions for a touring summer tyre
- RUN FLAT Cinturato P7 New - Car tyre | PirelliRun-flat availability and OE/size examples
- Select tyres for MERCEDES-BENZ cars — Tyres.netRetailer category context for Mercedes-Benz tyres
Helpful next reads
Keep comparing with related reviews and buying guides before checking the latest retailer prices.
Buying questions
Can a 2018 Mercedes-Benz C-Class use different tyre sizes by trim or wheel option?
Yes. The researched fitments for this model include 225/50 R17, 225/45 R18, 245/40 R18, 225/40 R19 and 255/35 R19, and trim or wheel packages can change which one applies. Some cars also use staggered front and rear sizes, so don’t rely on the model name alone.
How do I check whether my current tyres are one of the confirmed sizes?
Read the size on the tyre sidewall and compare it with the vehicle placard or handbook. On this page, the only confirmed sizes are 225/50 R17, 225/45 R18, 245/40 R18, 225/40 R19 and 255/35 R19, so the size must match exactly before you order.
What should I verify on the tyre listing before buying?
Check the load index, speed rating, season and any run-flat marking, then compare them with your current tyre. You should also confirm the latest price, stock and delivery cost on the retailer page, because those details can change after publication.