Omega Owners Forum

Chat Area => General Car Chat => Topic started by: crossy on 10 April 2012, 19:11:27

Title: What size tyre on 7.5 rim?
Post by: crossy on 10 April 2012, 19:11:27

Bought a set of 7.5 rims and am just wondering what width tyre fits them perfect.
Anywhere I ask they say. "you would fit a xxx tyre on that"
I want to know what is the actual tyre for that?

Cheers

Title: Re: What size tyre on 7.5 rim?
Post by: TheBoy on 10 April 2012, 20:59:29

GM fit 235/45/17 on the factory fit 17" x 7.5J

Title: Re: What size tyre on 7.5 rim?
Post by: doz on 10 April 2012, 20:59:52

From the top of my head the front rims on the LC are 7.5 or 8 inches and runs 235/45/17 rears are 9.5/10 and run 265/40/17

Title: Re: What size tyre on 7.5 rim?
Post by: crossy on 11 April 2012, 00:07:02

Cheers guys. :)

Other websites are telling me 215 and others are saying 225. Dont know whats right ha

Title: Re: What size tyre on 7.5 rim?
Post by: aaronjb on 11 April 2012, 09:25:15

Probably because there is no 'right'..

If you've departed from a manufacturer supplied size then you've got to take your pick of whatever tyres produce the right rolling radius and are appropriate for that rim width given their profile & construction. Tyre manufacturers will tell you which of their tyres are appropriate - e.g. Toyo suggest 225/45R17, 235/50ZR17, 235/55ZR17 all have an 'ideal' rim width of 7.5 but many others are acceptable and tested - and that's just for 17" wheels, for 15, 16, 18 etc it'll be different as the profile will generally be different.

So .. if it's going on an Omega and they're 17" wheels, stick to what Vauxhall intended - 235/45R17