At the moment, I have 16inch rims with 225/50r/16 tyres on them.I am soon to be getting new mags and tyres which are 235/40r/18. I did a tyre calculator test and these were the results:
I dont know what i`m looking at there, but I was just wondering if they were legal. Making the jump from 16`s to 18`s, I read that they had to be 15mm less or something ( 15mm rule)? Just wanting to know if they were legal and all.
18 inch wheels are legal as long as your car had 16 inch wheels as standard.
As far as the tyre width... 235 is fine.