255/40R18 Summer tires
The size 255/40R18 means a tire 255 mm wide, with a sidewall 40% as tall as it is wide (about 102 mm), built for 18-inch wheels. Its overall diameter is about 661 mm (26.0 in). We have 4 255/40R18 tires in stock from 13 models, starting at $303.00 per tire.
4 tires in stock in 255/40R18
$303.00Only 2 left
$426.00In stock
$480.00Only 2 left
$509.00In stock
11 more models currently out of stock
Vehicles that use 255/40R18
- BMW Z4 2019–2024
- Toyota Supra 2021–2024
- Mercedes-Benz C63 2017–2021
- BMW M4 2015–2020
- Mercedes-Benz CLS550 2007–2018
- Mercedes-Benz SL550 2007–2018
- BMW M3 2015–2018
- Mercedes-Benz CLS400 2016–2017
- Mercedes-Benz SL450 2017
- Mercedes-Benz SL400 2016
- Audi S6 2007–2011
- Mercedes-Benz E63 2010–2011
- Mercedes-Benz SL600 2004–2010
- Mercedes-Benz SL55 2003–2007
- Mercedes-Benz SL500 2004–2006
- Ferrari 575M 2002–2006
- Mercedes-Benz CLS500 2006
- Mercedes-Benz CLS55 2006
Original-equipment fitments from our vehicle database. Confirm the size on your door placard before ordering.
Sizes close to 255/40R18
- 225/45R18 660 mm
- 335/30R18 658 mm
- 295/35R18 664 mm
- 285/35R18 657 mm
- 265/40R18 669 mm
- 245/40R18 653 mm
- 235/45R18 669 mm
- 215/45R18 651 mm
Within 3% overall diameter on the same rim. Only change size with a professional’s advice; load index and clearance must still match.