[RS3Dell]

Mate I'd get it to a reputable garage asap. That print out is very odd and looks like a deliberate attempt to hide the results.
 
The rest of the numbers look exceptional. Makes me wonder if they sacrificed something on Caster which in turn is scrubbing your tyres.

James.

Negative camber usual causes wear on the inside edge & as Sean said the caster is non adjustable.

The caster angle is the angle drawen vertically though the center of the wheel & the angle of the suspension leg

Dell

[RS3Dell]

All depends Dell
How the car is aligned , Tyre pressure , driving style around corners.
As Brian said to me when we were discussing it, how do we know Audi haven’t purposely set the car up this way..... what one wheel is doing when Corning isn’t exactly the same as the other wheel.
Lots of Geometry changes happing, you only have to look at the (Ackerman) effect as the tyres are turned from left to right, contact patch of the tyre is different.

Sean.

I total agree with you Audi have forgotten more than we know tbh mate.

Dell.

[JamesBaby]

James.

Negative camber usual causes wear on the inside edge & as Sean said the caster is non adjustable.

The caster angle is the angle drawen vertically though the center of the wheel & the angle of the suspension leg

Dell

 

Yes I'm aware of this. Actually there is some minor adjustment available in Caster. It is small but usually enough to equal out any imbalance in Caster or Camber. Most aligners will not unbolt the subframe to attempt this. 

 

If caster is extreme it will cause the tyre to scrub on the inner and outer edges when turning a tight corner.

[terminator x]

Sean.

There has been postings about tyre wear in the past with the PFL using oem Pirelli.

But if I'm wrong I'll stand corrected.

Dell.

My OE fronts lasted 9k miles and were trashed. MPSS were still going after 31k.

TX.

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[RS3Dell]

Sean.

How many people on here have move there RS away from factory spec with wheel off sets,spacers & thats without figging about with tyre combinations to over come problems they've caused in doing so ?

I my case I've dropped mine 20mm to put more weight on the nose & get a quicker turn in but at the price of losing 20mm of suspension travel.

Dell.

[RS3Dell]

Yes I'm aware of this. Actually there is some minor adjustment available in Caster. It is small but usually enough to equal out any imbalance in Caster or Camber. Most aligners will not unbolt the subframe to attempt this. 
 
If caster is extreme it will cause the tyre to scrub on the inner and outer edges when turning a tight corner.

James.

Moving the subframe can only tweek the geometry & then you will need to re centralise the steering wheel as you've move the rack across the car.

Dell.

[T-800]

Sean.

How many people on here have move there RS away from factory spec with wheel off sets,spacers & thats without figging about with tyre combinations to over come problems they've caused in doing so ?

I my case I've dropped mine 20mm to put more weight on the nose & get a quicker turn in but at the price of losing 20mm of suspension travel.

Dell.

Yep.

Mine is lowered and spaced

Had it aligned twice, second time it had settled naturally so the readings where even better.

As you say though it’s impossible to know what has been done to every car or indeed how the car is set up / driven by the owner.

First alignment I had done ‘looked’ like it warranted subframe movement, however, it was explained to me that there was actually little change to be gained from it, which was actually proven on the second alignment 2 weeks later, when Everything was spot on after more settling.

[Fivepotfan]

Mate I'd get it to a reputable garage asap. That print out is very odd and looks like a deliberate attempt to hide the results.

 

The rest of the numbers look exceptional. Makes me wonder if they sacrificed something on Caster which in turn is scrubbing your tyres.

Actually, I have to admit that I am going to have another alignment check done somewhere else. I bought my tyres off Black Circles (they had a deal on Michelin's) and took them to my local tyre fitter (ALS) to get put on the car. I normally buy my tyres through them and they would give some discount but they couldn't get anywhere near the BC price. I think they were a bit pee'ed off when I turned up with four new tyres they hadn't supplied so I was not entirely surprised at the supposed 'disastrous results of the alignment. They claimed to have to move the subframe and other adjustments but only 20 mins later.....ta dah....the miraculous alignment with all green boxes.

[JamesBaby]

Sounds like a plan mate. Sad if they did stuff you though. Bad form that.


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[RS3Dell]

Actually, I have to admit that I am going to have another alignment check done somewhere else. I bought my tyres off Black Circles (they had a deal on Michelin's) and took them to my local tyre fitter (ALS) to get put on the car. I normally buy my tyres through them and they would give some discount but they couldn't get anywhere near the BC price. I think they were a bit pee'ed off when I turned up with four new tyres they hadn't supplied so I was not entirely surprised at the supposed 'disastrous results of the alignment. They claimed to have to move the subframe and other adjustments but only 20 mins later.....ta dah....the miraculous alignment with all green boxes.

 

Brian.

 

They got there own back by not doing anything by the sounds of it mate 

 

Dell.

[Fivepotfan]

Brian.

 

They got there own back by not doing anything by the sounds of it mate 

 

Dell.

I didn't mention the ridiculous bill they presented me with....... just happened to be exactly the amount that I saved on the tyres by buying them from Black Circles. I am contesting the amount they charged but need to be careful how I get them to admit that they screwed me over. I have a plan!

[Roy]

Is it a cunning one ?

[Fivepotfan]

Is it a cunning one ?

Yes it is Baldrick...it certainly is!

[JamesBaby]

Any updates? Have you had the geo redone ?


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[RS Steve]

I only replaced one set of tyres when i had my 8V RS3, stuck with the Audi spec Pirelli  RO2. Never had any problem with them other than being a bit soft on wear.

[Fivepotfan]

So..... a bit of an update on the Michelin's I fitted to my car in place of the OEM Pirelli's.

 

Once the tyres were fully scrubbed in I have to say that the grip in dry or wet conditions is in a different league to the Pirelli's. You would have to drive the car at a totally insane speed on a public road to induce any significant levels of understeer when compared to the Pirelli's.

But it's not all good news. Now that I have covered around a 1000 miles with the Michelin's I have noticed a strange tendency for the car to wander or tramline slightly on some road surfaces, almost as if the car was being driven in a crosswind and an occasional gust would need steering corrections to counter it to maintain direction. Then there is the harsh ride which is not helped by the increased tyre pressures to counteract the traction control issue. I would only use Dynamic mode on very smooth roads as it was just too bone hard on any other surface.

I have attributed this to the 255 section tyres fitted to the front. As mentioned in earlier posts in this thread, the 255 Michelin is a fair bit wider and has a much more square shoulder than the equivalent sized Pirelli, I have also never been completely happy about the bulged look of the sidewall of the 255 Michelin when fitted to the front 8.5J alloy. It's as if it's squeezed onto the alloy.

So I have now fitted the 235 sized Michelin's (but 35 profile) to the front which is now the 'square' setup that some owners have on their cars. The tyre now appears to sit properly on the rim without any bulged sidewall and the ride comfort has been improved to where I can actually drive around in Dynamic mode again without smashing my spine to hell. No surprise that grip is slightly less than with the 255 section tyre (but still better than the OEM Pirelli) and the turn in is not quite as sharp but so far I have had no issues with traction control or the strange random wandering or tramlining. Overall, this seems to be the better setup for my car (I have Eibach Pro springs fitted too).

 

The 255/30 section Michelin next to the 255/30 section Pirelli.....

 

The 255/30 Michelin fitted to the front 8.5J alloy. If you zoom in you just see the slightly 'bloated' look of the side wall of the tyre. Like it's squeezed onto the alloy.

 

....and the 235/35 Michelin. The side wall looks much better and has a higher profile (35 versus 30)

Edited by Fivepotfan, 05 January 2019 - 12:46 PM.

[Duke3D]

Interesting read Brian as I am experiencing similar issues running with 255 MPS4’s on the front of my 8P. On the broken off camber B roads I use a lot the front bobbles around like an old Porsche 😫
I’ve even considered getting 1/2 degree negative toe put on the car to see if it helps although I’ve realised my 034 rear ARB bushings are shot so I’ll wait until I’ve fitted new ones to see if that helps.
Either way I am really struggling to bond with these tyres and just want the old MPSS back as I had no problems with them 😊😊

[Fivepotfan]

Interesting read Brian as I am experiencing similar issues running with 255 MPS4’s on the front of my 8P. On the broken off camber B roads I use a lot the front bobbles around like an old Porsche
I’ve even considered getting 1/2 degree negative toe put on the car to see if it helps although I’ve realised my 034 rear ARB bushings are shot so I’ll wait until I’ve fitted new ones to see if that helps.
Either way I am really struggling to bond with these tyres and just want the old MPSS back as I had no problems with them

I had a bit of a 'B road' blitz this afternoon. The car felt more predictable and actually easier to drive quickly, probably because it was not banging and crashing about on the wider ultra low profile tyres. I think the 35 profile suits my car better (I have lowered Eibach suspension) and allows it to ride bumps and undulations without comprising steering feel.

[JayRS3]

Another comparison 235 against the 255 with Michelin PS4s on 8P with 8V rims

Edited by JayRS3, 05 January 2019 - 05:25 PM.

[RS3Dell]

Another comparison 235 against the 255 with Michelin PS4s on 8P with 8V rims

The 235/35-19 on a 8" rims & the 255/30-19 on a 8.5" rims is not a fare comparison.

I think the 8.5 rims would suit a 245 tyre tbh.

Dell.