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Author Topic: Correct tyre size on rears?!  (Read 5197 times)

Offline maxwell

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Correct tyre size on rears?!
« 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??
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Offline mad_pete

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Re: Correct tyre size on rears?!
« Reply #1 on: July 03, 2012, 11:01:57 pm »
They are. I had that in the front when I got mine. ESP should settle down
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Offline RedRobin

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Re: Correct tyre size on rears?!
« Reply #2 on: July 04, 2012, 12:01:29 am »
.
On the ex-factory GTI, tyres are the same size all around: 225/40R/18/YXL
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Offline Andy

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Re: Correct tyre size on rears?!
« Reply #3 on: July 04, 2012, 01:06:44 am »
^^ this
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Offline ROH ECHT

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Re: Correct tyre size on rears?!
« Reply #4 on: July 04, 2012, 11:19:49 am »
225/40 yes. Wider in the back will reduce handling rather than improving it.
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Offline Gene Hunt

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Re: Correct tyre size on rears?!
« Reply #5 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.
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Offline DanGB

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Re: Correct tyre size on rears?!
« Reply #6 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?
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Offline maxwell

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Re: Correct tyre size on rears?!
« Reply #7 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?
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Offline ROH ECHT

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Re: Correct tyre size on rears?!
« Reply #8 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...
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Offline RedRobin

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Re: Correct tyre size on rears?!
« Reply #9 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?
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Offline rich83

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Re: Correct tyre size on rears?!
« Reply #10 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!!
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