sanjeev

Hi all,
I am trying to decide on a set of aftermarket wheels, and have noticed that most aftermarket wheels for P-cars use smaller positive offsets (reduced ET), which I think is to push the wheels outwards for a more aggressive appearance. While this may be fine for the rear wheels, I would think this would compromise steering geometry on the front wheels - impacting the scrub radius, steering feel, etc.

Eg. stock front Carrera 991 wheels are 19x8.5 ET 54
Many aftermarket wheels use ET45, say - which is almost 10mm shift of the wheel/tire centerline to the outside. I'm certain the factory designs their wheel specs and steering geometry for a reason. I just don't know why the aftermarket does otherwise, or if it indeed matters.

Does this create noticeable problems with either of:
- steering feel/effort, tramlining, kickback
- turn-in responsiveness
- increased sensitivity to wheel imbalance

Let me know if anyone has noticed any adverse effects on steering due to aftermarket front wheel offsets >5mm say from stock. Is there any tradeoff to be concerned about?

Thanks,
- Sanjeev

mcipseric

5 mm spacers are a stock option.
I run 15 mm spacers all around. I would prefer wheels with that fitment than run a spacer.

Joec500

I ran 12mm spacers up front, but that threw up way too much debris on the car, do you have issues with the kick up?

I am back to 5mm fwiw

mcipseric

I have not noticed any kick up. Having a Paint to sample car, I do pay particular attention to that possibility.

sanjeev

Hello
Thanks for your reply. Seems like a 5mm spacer is an approved configuration. Any experience on whether the steering feel is different with >5mm offsets on the front wheels?

Thanks,
- Sanjeev

Joec500

I ran 12mm on track, as well as 5mm, I didn't notice any difference.

Hurricane

My current 991S has 5mm spacers (OEM) and my previous 991S did not. I cannot notice any difference in driving.