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 ·
sorry i keep posting sub threds but i am still not sure and i know you lads / lasses know your ICE any way
i already have an amp and i have been warned off getting 2 12 inch subs which take 125 WRMS
and been told to get 1 that can take 250 WRMS
i have been told to get a Cerwin Vega HED 12 inch sub at leeds car audio
and i have been told at unicar to get a JL Audio W3 12 inch what you all think they both say each others is better or do you think different ?
thanks
Simon