18"x75" Mags and 245/40/r18 - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars

YOOT · 01-15-2005, 13:59

Can you fit 245/40 rubber on a 7.5" wide 18" rim? I noticed most tyre places try to sell you 235/45/r18 rubber which runs the same profile as the 17" tyre but on an 18" rim, which means you increase your rolling diametre by 1"!!

The reason i ask is the mags I want only come in 7.5" and the factory 18" with 245/40 rubber are 8" wide.

MrPlow2 · 01-17-2005, 17:25

Yeah, they'll bag out a little bit, but there won't be any issues with them.

YOOT · 01-19-2005, 01:05

will they look funny? I like square shoulders on my tyres. Just like factory.

MrPlow2 · 01-20-2005, 21:08

Nah, they won't be square.

What rims are you looking at getting?

YOOT · 01-20-2005, 22:18

They are REX rims, can't remember the name. Direct copy of Lowenhart LD1's. Only come in 7.5"

MrPlow2 · 01-21-2005, 18:29

There's a few copies of LD1's floating around. Have you tried looking at another manufacturer who does a copy of the wheel?

red250 · 01-21-2005, 18:37

they will fit really good.
I have 265's on 8" and they protude a small amount protecting the rims from kerb damage.
It also helps the tyre wear on the shoulders
I have been running my 245's @ 50 psi and upping that to 55psi trying to get more wear in the tyre centre.