Switching to a squared setup, need help

[randotheking]

16 GT PP


I want to switch to a squared setup for both Summer and Winter - I don't track this car and I live in the city in the Midwest. After the P Zeros wear out I'll switch to something more economical, but here's my plan until then and it should set me up to save money on tires in the long run. I just need to know, does it work?

Buying a set of GT PP takeoffs:

Summer Setup
Front: 19x9.5 - Pirelli P275/40ZR19 P Zero - 5mm spacer
Back: 19x9.5 - Pirelli P275/40ZR19 P Zero - no spacer


Winter Setup
Front: 19x9 - BRIDGESTONE BLIZZAK LM-32 P245/40R19 98V XL - No spacer
Back: 19x9 - BRIDGESTONE BLIZZAK LM-32 P245/40R19 98V XL - No spacer


Thoughts? I'm not sure if a 5mm spacer is enough. I've seen conflicting posts on multiple forums stating that the wheels clear. On top of that they mentioned >5mm spacer means it's lug centric instead of hub centric. I'm not sure what that means or why it matters.

5mm spacers
http://www.ebay.com/itm/2-WHEEL-HUB...ash=item281ec107c8:g:hEgAAOSw6n5XumFX&vxp=mtr


7mm spacers
http://www.ebay.com/itm/2-WHEEL-HUB...ash=item281ec10812:g:vTMAAOSwZVlXumFf&vxp=mtr


10mm spacers
http://www.ebay.com/itm/2-WHEEL-HUB...ash=item281ec1082d:g:MGIAAOSwU-pXumFm&vxp=mtr

Do I need new studs regardless of spacer size? If so, which ones can I buy that are straight bolt on? Another forum member started talking about knurling and lost me

Only one stud 6-10mm longer vs stock and will require dressing knurl on bench grinder.
Stock studs are 49.9mm with 0.625 knurl. cut n paste from phone notes:
610-435 57.94mm 0.628knurl
610-509 73.4mm 0.627knurl
610-437 76mm 0.628knurl
610-530 78mm 0.626knurl
610-333 90.5mm 0.625knurl

 

[Budwise]

So you're getting 19X9.5 (GT PP Rears) for all 4? GT PP Takeoff's otherwise would be 19X9 front and 19X9.5 rear. If that is the case you don't need spacers.

 

[randotheking]

So you're getting 19X9.5 (GT PP Rears) for all 4? GT PP Takeoff's otherwise would be 19X9 front and 19X9.5 rear. If that is the case you don't need spacers.

Yes I have another set of GT PP wheels. According to others I definitely need 5mm up front when running 19x9.5

I ordered a 5mm spacer, I'm going to fit it and see what happens