Tyre Pressure

[Golf Houso]

I'm currently running 35 all round and very happy with the grip. At 40, I felt a little unsafe on roads with tram lines in the wet.

With the increase in tyre pressure, the centre of the tyre rises and as described earlier by Preen increases wear. It also means that water moves much much better across the tyre due to the wider surface and higher center, so i can't see why your car would perform worse with higher PSI in the wet when it should be the opposite.

[Blitzen]

With the increase in tyre pressure, the centre of the tyre rises and as described earlier by Preen increases wear. It also means that water moves much much better across the tyre due to the wider surface and higher center, so i can't see why your car would perform worse with higher PSI in the wet when it should be the opposite.

Because with the center of the tyre being raised, it may present better water dissipation, but it also means less of the tyre tread face is in contact with the road, which as you know equates to less grip.

[Golf Houso]

Because with the center of the tyre being raised, it may present better water dissipation, but it also means less of the tyre tread face is in contact with the road, which as you know equates to less grip.

Yes that too, but even the manual suggest to increase PSI during heavy loading or wet weather.

[Blitzen]

Yes that too, but even the manual suggest to increase PSI during heavy loading or wet weather.

Ahh, fair enough...I understand about the heavy loading, but that is weird about the wet weather, and goes against everything I have been taught.

[Golf Houso]

Ahh, fair enough...I understand about the heavy loading, but that is weird about the wet weather, and goes against everything I have been taught.

Yeah thats what I thought as well until I few people told me otherwise and I had a look at the manual, at least I thought I read it in the manual

[firdausasri]

Currently running on 2.2 (fr) & 2.1 (rr) bar, so far felt too loose. Gonna try 2.8 & 2.6 bar later on. Do you guys know what our car alignment spec? Camber, toe? Is the caster adjustable?

[pixl]

Do you guys know what our car alignment spec? Camber, toe? Is the caster adjustable?

I believe I've read something about the toe being adjustable, but not the camber. Not 100% sure.

[DaveMack]

One thing to remember also is that different brands recommend differing pressures. I ran my Contis at 40 ... but I'm running the Marangonis at 36. The Marangonis have a stronger sidewall than the Contis and 36 gives a little extra flex. Generally ... I'd take the tire manufacturer's advice ... for optimum performance & wear ... they should know best.

Dave

[firdausasri]

I believe I've read something about the toe being adjustable, but not the camber. Not 100% sure.

Max,

The front cambers are adjustable, but not too sure about the rears coz of the semi independent setup

[Timbo]

Don't set your expectations too high about front camber adjustability -- there's virtually none to be had

[MACCAA]

Max,

The front cambers are adjustable, but not too sure about the rears coz of the semi independent setup

Er no they're not.Only adjustment on the front is for toe.
Rear is a beam,not "semi independent"? and has no camber/toe adjustment.

[VW GTI]

Can't you use shims?

[Blitzen]

Er no they're not.Only adjustment on the front is for toe.
Rear is a beam,not "semi independent"? and has no camber/toe adjustment.

Ok.....How are you supposed to adjust Castor, and Camber for when you do a wheel alignment?? Just dosn't seem right.

[GT3]

Can't you use shims?

Yes you can, Whiteline make them for the Polo GTI. I tried them, although they toed out too much, so took them out.

[firdausasri]

Shims? What's that? Did you guys running on adjustable suspension & front pillow ball mounts? Supposed it can adjust camber with that right? I'm finding the car kinda wash wide at corners, got to do lots of left-foot braking just to get it neutral with ESP off of course