Hi, i've got vrs 1 with vrs alloys, i need new front tyres, i would like to buy 225/45 would it be okey for the vrs alloys or should i rather buy 205/50 as before?thanx for any answers, mark

Stick with the right size, lowering the profile will affect the speedo reading.

Plenty of people on here use 225/45. It won't effect your speedo as the difference in the wall height is about 0.5mm and they are cheaper usually, hence the reason they are popular

if replacing all 4 go for 225 otherwise stick with what you've got, you lower the profile which is a percentage of the width so your not affecting the rolling radius really at all.

and eagle F1 assymetric's are imo the best tyres ive ever used!

edit just realized i make no sense!!!

the profile 225/45/17 relates to a percentage of the width IIRC so when widening the tyre the lower the profile number to keep the same rolling radius.

thanx, i am thinking of buying barum bravuris and yes 225/45 are 20 quid cheaper and look better

Just did the maths 205/50 = tyre wall 102.5mm and 225/45 = 101.25mm. Not going to make any noticable difference in speedo readings

Rolling radius explained:

http://www.tyresite.com/tyrearticle.asp?page=20

That is on about increasing wheel size not tyre width. I run 225's on 18" wheels so I have to go 40 profile on 17's you have to go 45 as a 40 would be too small rolling radius

That is on about increasing wheel size not tyre width. I run 225's on 18" wheels so I have to go 40 profile on 17's you have to go 45 as a 40 would be too small rolling radius

Agreed but the post was aimed at RichB86.

Rolling radius explained:

http://www.tyresite.com/tyrearticle.asp?page=20

It's fine to use 225/45/17's on the car as iirc they fitted them on a few cars from the factory at some point, though I may have dremt this bit :confused:

Going from 205/50/17 too 225/45/17 makes your tyres diameter 3mm smaller which eqautes to 0.47% difference which as your link points out is well within the the recommended 2.5% limit.

Have a play yourself TYRESAVE: Tyre Size Calculator

Agreed but the post was aimed at RichB86.

I have far too much time on my hands lately so I'm answering lots

Rolling radius explained:

http://www.tyresite.com/tyrearticle.asp?page=20

cool shall be having a gander tonight

I wouldn't consider Barums again. On my last car I changed them for Toyo Proxes (and the cooking version, not the T1), and suddenly it was like the front end was painted to the road!! So much so that I actually had oversteer when the rear Vredsteins reached their limit and I still had front grip to spare.

Do they even make Eagle F1's in 205/50/17, ive been looking but maybe not hard enough. Plus they dont state that size on their website...

EDIT: sorry ment Eagle F1 GS-D3, not heard about the Eagle F1 Asymmetric's, wonder how they compare.

assymetric won evos tyre test which is why i use them and they are the new versions of the gsd3 i think

If you use The Wheel & Tyre Bible tyre size calculator below, it will give you an indication of how much the speedo will underread or overread. The first page is also well worth reading.

Car Bibles : The Wheel and Tyre Bible Page 2 of 2

Do they even make Eagle F1's in 205/50/17, ive been looking but maybe not hard enough. Plus they dont state that size on their website...

EDIT: sorry ment Eagle F1 GS-D3, not heard about the Eagle F1 Asymmetric's, wonder how they compare.

I tried to get GS-D3's in 205/50/17 could'nt get them anywhere in that size!

After searching yea the Asymmetric's were brought out to replace the GS-D3's. Still not sure on the size though, but i'd stick them on the front. =-)

if your going to put wider ones on i think legally you have to put them on the back.

Kumho KU31's. pretty impressed and relatively cheap (£80 per boot).

Get good reviews on here.

Go for the 225. The extra grip will be nice;-) the Dunlop Sp Sport MAXX are pretty savage! Not cheap though...here in Paddyland there €175! Im sure ye brits can get them for half that.....