Might be stating the obvious (to some) but something I didn't realise until I started trying to pick tyres for aftermarket wheels is that the profile figure - e.g. 40 - is 40% of the width.
So for a 255/40/17 tyre - diameter is 255mm, profile / side wall is 102mm (40% of 255), and radius is 17inches.
Learning this made it all make a lot more sense to me. I also have this graphic to refer to. Can't recall where I found it but it's now saved on my desktop!
I also wanted a chunky looking tyre with a solid side wall and after going 245(F) / 265 (R) , have since switched back to 235(F) / 255 (R) as I found the handling was noticeable more boggy and I use the car for fast road and track use. For ref, these tyres are on 18" BBS LMs.
By
sumshiftyguy ·
:balloon::balloon::balloon::balloon::balloon::balloon::balloon:
less than 2 months ago i started looking at 300zx's and 350z's
and low and behold one of my bro's at work bought a smart 350z in silver
i kept pondering on which to get finally choosing my baby 300 zx tt in sexy pants red
and now yep you guessed it in the car park today -----
a very clean 370z in copper
so in a matter of a few months our works car park has become one sexy place to be
so we have a true speed nutter in silver
a cruiser in sexy red
and i am sad to say a never to be out copper ornament (he has four other cars only ever drives a battered peugoet 205 diesel )