What’s the widest tire I can fit on 18x8 wheels?
My "stock" size is 255/40/18 I was thinking about 275/35/18 but don’t know is the will fit and be safe to drive.
Thanks

 

245/40-18: 25.7” diameter; 8.0” – 9.5” wide wheel
255/40-18: 26.0” diameter; 8.5” – 10.0” wide wheel
265/35-18: 25.3” diameter; 9.0” – 10.5” wide wheel
275/35-18: 25.5” diameter; 9.0” – 11.0” wide wheel
285/35-18: 25.9” diameter; 9.5” – 11.0” wide wheel
295/35-18: 26.2” diameter; 10.0” – 10.5” wide wheel
315/30-18: 25.5” diameter; 10.5” – 11.5” wide wheel
335/30-18: 26.1” diameter; 12.0” – 13.0” wide wheel

For a 18x8 the recommend size is 245/40-18 or 255/40-18.

275 or even 265 is in my opinion way to large to fit on a 8" wheel.