Audi TTS - Different tyre brands front/back on a 4WD?

[russt93]

Hi,

I recently bought a 2016 TTS and needed the front tyres immediately, I wanted Michelin pilot sport 4's but no where had any in stock at 255/30 R20 so I'm on a new pair Pirelli P Zero on the front and worn pair one rear (about 2000 miles ish left).

The Michelin pilot sport 4 are now in stock and so I'd like to put these on the rear ready from when the fronts need changing again. I've read a lot of things that same the tyres should be the same brand all round if it's a 4WD? Any advise on this?

Thanks, any advise is much appreciated!

Russ.

[Cupramax]

The all 4 tyres the same is more for cars with full time Quattro like the A4/5/6/7/8, TT is Haldex so if fwd most of the time so I wouldn’t worry.

[Baldchap]

If there's a rolling radius difference over 5% the electronics will spot the dummy.

[russt93]

Baldchap said:

If there's a rolling radius difference over 5% the electronics will spot the dummy.

What are you saying? It will compensate or be a problem?

[snoopy25]

Baldchap said:

If there's a rolling radius difference over 5% the electronics will spot the dummy.

Is there a staggered set up on a TT? Thought it was a square set up all round?

[russt93]

So it will be fine do we all think?

[Weekendrebuild]

Would swap them all an check the treads every week in case of uneven wear ! If it’s uneven replace all 4 again

[mcpoot]

"I've read a lot of things that same the tyres should be the same brand all round if it's a 4WD?"

No great surprise that most tyre suppliers will trot out that line.

Continental website states:

"Can you mix different tyre brands and tread patterns on your vehicle?
First and foremost, our guidance is to fit the same tyres on all wheel positions of your vehicle.

However, if mixing becomes unavoidable due to a lack of availability or budget constraints, then it’s possible to mix tyre brands and tread patterns – but only so long as drivers fit a pair of tyres with the same tread patterns and brands across the same axle. That means installing a pair of identical tyres on the rear axle, or a pair of identical tyres to the front."

Not sure why you think it would be an issue for 4wd.

[blueg33]

Newest tyres should be on the rear of all tyres are the same size

[mcpoot]

blueg33 said:

Newest tyres should be on the rear of all tyres are the same size

It's worrying how many people still don't understand this.

[blueg33]

mcpoot said:

blueg33 said:

Newest tyres should be on the rear of all tyres are the same size

It's worrying how many people still don't understand this.

Indeed! Even on ph. It’s nearly as contentious as merge in turn.

[DJMC]

snoopy25 said:

Is there a staggered set up on a TT? Thought it was a square set up all round?

It's differing wear, not staggered, which is the issue.

[cay]

blueg33 said:

Indeed! Even on ph. It’s nearly as contentious as merge in turn.

80% + braking bias to the front, I'd rather stop in the wet than not have to deal with a bit of oversteer ( which esp would help with on anything newish)

[blueg33]

cay said:

blueg33 said:

Indeed! Even on ph. It’s nearly as contentious as merge in turn.

80% + braking bias to the front, I'd rather stop in the wet than not have to deal with a bit of oversteer ( which esp would help with on anything newish)

I’m not going to bite. The average ph’er knows way more than tyre makers and car designers!

[Gren]

Different brands front to back and different wear levels front to back are no problem.

I've got the identical car (after 6 years of owning a mk2 TTS and doing the same) and ran it just like that earlier this year. Fronts wore down about 3k before the rears and swapped the Bridgestones for Goodyears. Strangely the mk2s rears wore down faster than fronts.