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 ·
i'm gonna install a few gauges(boost,oil maybe water)
just been looking at which ones to buy,and autometer have been recemended(mechanical)
ive had a good look and i like the look of the digital ones(s,p,a design)
is 1 type better than the other or are they all the same,are the digital ones harder to install or are they all the same,
anyh help and advice(pro's and cons) on installing boost .oil and water gauges would be much appreciated.
thanks jay