996tt Rear Tyre Wear?
996tt Rear Tyre Wear?
Author
Discussion

LeighB

Original Poster:

3,858 posts

254 months

Tuesday 20th March 2012
quotequote all
Just wondering if getting 7k miles out of my rear tyres is about right or not. Fronts are still very healthy.

They're MPS2s and have not (yet) seen a track day. Any thoughts chaps?

davek_964

11,239 posts

204 months

Tuesday 20th March 2012
quotequote all
I get considerably more than 7k out of a set of rears - more like 10-15k.

X-UFO

267 posts

217 months

Tuesday 20th March 2012
quotequote all

Where is the majority of the wear? Centre of the tread, outer edge, inner edge?


LeighB

Original Poster:

3,858 posts

254 months

Tuesday 20th March 2012
quotequote all
davek_964 said:
I get considerably more than 7k out of a set of rears - more like 10-15k.
They were through to the wires on the inside edge and I was surprised how quick they've worn.

Are these cars heavy on negative rear camber or do I need a geo check on the rear? I know it wouldn't do any harm to have it checked I guess.

X-UFO

267 posts

217 months

Tuesday 20th March 2012
quotequote all
Get the geo checked. Two years ago mine were wearing on the inner two or three inches.

Had the geo done and wear is in the middle since.

It also improved the feel of the car greatly.

Edited by X-UFO on Tuesday 20th March 13:44

mr pg

2,065 posts

234 months

Tuesday 20th March 2012
quotequote all
Ditto above. Get new tyres, and geo straight away. Sounds like you way too much neg camber.

LeighB

Original Poster:

3,858 posts

254 months

Tuesday 20th March 2012
quotequote all
mr pg said:
Ditto above. Get new tyres, and geo straight away. Sounds like you way too much neg camber.
Just had some new ones fitted today so a geo check it is.

Thanks everyone thumbup

jonamv8

3,276 posts

195 months

Tuesday 20th March 2012
quotequote all
I got 4.5k out of Pirellis so 7k no too bad. Now on MPS2's also having done a GEO. Make sure your pressures are right too, makes a big difference on these

monthefish

20,467 posts

260 months

Tuesday 20th March 2012
quotequote all
I had about the same with my last set of rears - probably closer to 4-5k miles, and it’s the inner edges that are worn. Pressures checked religiously.

I’ve just had the geometry done and have a brand new set of rears ready to go on, so I’ll see how these go, although apparently its quite normal for the inner edges to wear first due to the large degree of neg camber on the turbo.

LeighB

Original Poster:

3,858 posts

254 months

Tuesday 20th March 2012
quotequote all
monthefish said:
I had about the same with my last set of rears - probably closer to 4-5k miles, and it’s the inner edges that are worn. Pressures checked religiously.

I’ve just had the geometry done and have a brand new set of rears ready to go on, so I’ll see how these go, although apparently its quite normal for the inner edges to wear first due to the large degree of neg camber on the turbo.
So lots of neg camber is as the factory intended then? Keep us up to speed MTF with how they wear won't ya.

davek_964 said:
I get considerably more than 7k out of a set of rears - more like 10-15k.
So how do you manage to get that sort of mileage then? Are you running Michelins as well Dave?

monthefish

20,467 posts

260 months

Tuesday 20th March 2012
quotequote all
LeighB said:
monthefish said:
I had about the same with my last set of rears - probably closer to 4-5k miles, and it’s the inner edges that are worn. Pressures checked religiously.

I’ve just had the geometry done and have a brand new set of rears ready to go on, so I’ll see how these go, although apparently its quite normal for the inner edges to wear first due to the large degree of neg camber on the turbo.
So lots of neg camber is as the factory intended then? Keep us up to speed MTF with how they wear won't ya.
Will do. thumbup

Porkupine

1,722 posts

194 months

Tuesday 20th March 2012
quotequote all
Where do you guys get the geo done...protrye any good?

Any brand names any good or has to be specialists like CG?

F3RNANDO

5,186 posts

207 months

Tuesday 20th March 2012
quotequote all
LeighB said:
So lots of neg camber is as the factory intended then? Keep us up to speed MTF with how they wear won't ya.
Lots of negative camber does suit and is designed for a certain driving style!driving

If you are around town or quite leisurely for the majority of your miles you will probably get inner shoulder wear with that geo.

sy247

377 posts

223 months

Tuesday 20th March 2012
quotequote all
10k out of my MPS2 rears on 996t. Tyre place said I had approx 2K left in them but as I am driving to the Alps in April I thought I would change them and put the old ones back on for a track day.

Mine wore on the inside and outside edge, the car was setup at Center Gravity about 6 months ago.

Edited by sy247 on Tuesday 20th March 18:06

smj996c

319 posts

222 months

Tuesday 20th March 2012
quotequote all
7-10k miles as a range out of a set of rear mps2's on a Turbo is about right obviously dependant on driving style, geo and pressures.

Sunnysidebb

1,385 posts

196 months

Tuesday 20th March 2012
quotequote all
7-10k is about right for me to. I have had James at Nine excellence set my geo up. I asked him to remove .5 deg neg on the rears.
Seems to be fine. Went well at Brunters, high speed and no spins.

davek_964

11,239 posts

204 months

Tuesday 20th March 2012
quotequote all
LeighB said:
So how do you manage to get that sort of mileage then? Are you running Michelins as well Dave?
Yep, PS2s.

I guess it's partly because the car is my daily driver, and so a lot of the time it's not really accelerating any harder than most tin boxes. Journey to work is fairly short - car barely gets warmed up - so obviously I'm driving gently then.

It does get abused when the opportunity arises, but I guess that's a relatively small percentage of my mileage - and will be even less these days because if I do fancy a blast I may use my other car instead.

LeighB

Original Poster:

3,858 posts

254 months

Tuesday 20th March 2012
quotequote all
davek_964 said:
Yep, PS2s.

I guess it's partly because the car is my daily driver, and so a lot of the time it's not really accelerating any harder than most tin boxes. Journey to work is fairly short - car barely gets warmed up - so obviously I'm driving gently then.

It does get abused when the opportunity arises, but I guess that's a relatively small percentage of my mileage
Ditto!

Must be a geo issue then smile

StuB

6,695 posts

268 months

Tuesday 20th March 2012
quotequote all
Leigh, my rears are still in good condition and have seen track action and my usual spirited driving, do your wear seems excessive. The handling on mine is pretty good, but she does tend to 'shake that ass' every now and again, do I might have less neck gator camber. SCM claimed they'd done the geo on mine.

996ttalot

1,931 posts

204 months

Tuesday 20th March 2012
quotequote all
7k I wish - managed 2k on last set but then it only gets driven one way yes

The way the settings are tends to wear the inside edge - it is the most common situation we see. Too much negative camber clearly increases this.

We set up with fast road gt2 settings on 996 turbos but frankly whilst geo/hardware/pressures all affect , biggest factor is how you drive.

Ken