Its taken me most of the evening reading your excellent post Kis. I'm particularly interested in the above section on increasing the sidewall size for a little added comfort. (i have a 51 year old spine!)kis wrote: ↑Mon Jul 09, 2018 10:20 am
18” Tyre Sizes
Changing tyre sizes is also an option for those with 18” wheels. This could be because of a complex suspension and low spring set up, or simply to save some money on opting for slightly thinner tyres. The fronts can be changed from standard 225/40/18 to 215/40/18 (narrower) or 215/45/18 (narrower and for increased sidewall… comfort). Rear wheels as standard are 255/35/18 and this could be changed to 245/35/18 (narrower) or 245/40/18 (narrower and for increased sidewall… comfort).
If you do opt for increased sidewall on the fronts or the rears there is always a chance you may experience some rubbing. Lots can affect this such as road conditions, condition / age of suspension, whether you have lowering springs, if you’ve got spacers, etc. etc.
if i change the tyres, currently the standard sizes (225/40/18 & 255/35/18) with the intention of increasing the sidewall to 45 and 40 respectively, do i have to have the narrower tyre sizes you mention above?
ie. can i run 225/45/18 & 255/40/18 or must they be 215/45/18 and & 245/40/18 (is the narrower size recommended to lessen the chance of rubbing?)
I appreciate i could make life simple by changing the wheels to 17 inchers but the 18s i currently have looks so damn cool ( style 135 i believe)
cheers, Dani