MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: maxwell on July 03, 2012, 10:58:48 pm

Title: Correct tyre size on rears?!
Post by: maxwell on July 03, 2012, 10:58:48 pm: Hey all when i picked up my golf a few years back the Monza 2 alloys had a different profile tyre on the back to what it had on the front..Rears 245/40/18 & fronts 225/40/18. Is this normal? I did run 225 on the back for a few days while waiting for a some new rubber but this played havoc with the ESP! Its only come to light as the local tyre fitter said the rears are too big??
Title: Re: Correct tyre size on rears?!
Post by: mad_pete on July 03, 2012, 11:01:57 pm: They are. I had that in the front when I got mine. ESP should settle down
Title: Re: Correct tyre size on rears?!
Post by: RedRobin on July 04, 2012, 12:01:29 am: .
On the ex-factory GTI, tyres are the same size all around: 225/40R/18/YXL
Title: Re: Correct tyre size on rears?!
Post by: Andy on July 04, 2012, 01:06:44 am: ^^ this
Title: Re: Correct tyre size on rears?!
Post by: ROH ECHT on July 04, 2012, 11:19:49 am: 225/40 yes. Wider in the back will reduce handling rather than improving it.
Title: Re: Correct tyre size on rears?!
Post by: Gene Hunt on July 04, 2012, 02:59:17 pm: Quote from: RedRobin on July 04, 2012, 12:01:29 am
.
On the ex-factory GTI, tyres are the same size all around: 225/40R/18/YXL
........correct,should all be the same.
Title: Re: Correct tyre size on rears?!
Post by: DanGB on July 04, 2012, 03:12:42 pm: Quote from: ROH ECHT on July 04, 2012, 11:19:49 am
225/40 yes. Wider in the back will reduce handling rather than improving it.

How so?
Title: Re: Correct tyre size on rears?!
Post by: maxwell on July 05, 2012, 07:18:55 pm: Cheers guys, not sure why the rears are bigger :confused:. Will the ESP sort itself out then once ive done plenty of driving with the new size rears on?
Title: Re: Correct tyre size on rears?!
Post by: ROH ECHT on July 08, 2012, 09:07:54 am: Quote from: DanGB on July 04, 2012, 03:12:42 pm
Quote from: ROH ECHT on July 04, 2012, 11:19:49 am
225/40 yes. Wider in the back will reduce handling rather than improving it.

How so?

Wish I knew why. I've read a few articles where tuners modded mkv's and put wider tires in the rear then what was up front. and they found the handling was worse with the set-up. I cannot recall why that was but they went back to matching the rear size with that of the fronts and found that cornering improved. I'll search my mags, maybe I'll find one of the articles and get back as to why this is...
Title: Re: Correct tyre size on rears?!
Post by: RedRobin on July 08, 2012, 10:01:19 am: .
I've heard that putting wider tyres on the front of a FWD car helps. However, it may increase the chances of aquaplaning.

The RS3 has wider fronts but that's 'quattro' - Or is it just Haldex?
Title: Re: Correct tyre size on rears?!
Post by: rich83 on July 08, 2012, 10:08:16 am: If you put wider tyres on the rear you will be biasing the car towards understeer...... This is not good!!