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 have the same wheels that's on this car, i need a center cap but don't know the make of them to is if it's possible to get hold of one/set.
I sent the seller a message asking him/her what make they are.
They haven't replied back probably because i asked about the wheels and not the car.
If anyone knows the car or the make of these wheels i'd greatly appreciate it.
http://www.ebay.co.uk/itm/Nissan-300-ZX-Twin-Turbo-UK-Spec-Manual-/351099022474?ssPageName=ADME:X:AAQ:GB:1123