Zoo Tv wrote:deucer wrote:Sizes that fit all Liberty SpecB (3.0R-B and GT) stock 18" rims are:
- 215/45/18 - OEM size
- 225/40/18 - Rolling diameter is marginally smaller than OEM size, but well within legal limits.
Can 225/45/18's not be used on the 3.0RB 7 inch rim?
Dunno. Probably best you speak with a tyre shop. I don't even know what options you have with a 225/45/18 tyre. I've only ever investigated the 225/40/18 option.
To determine differences in rolling diameter, section sizes, effect on speedo reading etc check out:
http://www.miata.net/garage/tirecalc.html
Cheers,
deucer.