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 ·
Just swapped my old cracked bumpers for newly painted ones today.
Bit of trepidation due to long and detailed idiots guides that I've read.
However, it all went well. The rear took longer due to the boot being dismantled to get all the nuts.
One thing - after the car was bolted back together - we found a piece of moulded polystyrene that fell out of the old front bumper - we left it out.
It looked like it was shaped for a reason but couldn't work out it's usefulness so it stayed out!!
Any obs?
Edited by peranaman