GXP wheels are 18x8. The key to making 8.5" work will be the offset of the wheel you're considering. Too low and you hit your fender, too high and you won't clear the strut. If you were to err on a different tire size, I would go in the direction of slightly shorter than stock.
Hub-centric rings are absolutely key, also. Many aftermarket wheels have large hub bores in order to accommodate different makes and models of cars. Get the right spacer that will adapt the wheel to the 70.1mm GM 5x115 hub bore diameter. Sometimes you get lucky though - my aftermarket winter alloys are ~70mm to begin with.
Will 20" wheels have an adverse affect on my TPMS?
-
repinS
- Moderator
- Posts: 7391
- Joined: Mon May 19, 2008 9:51 pm
- Year and Trim: 09 G8 GT
- Location: Toronto, Canada
- Contact:
Re: Will 20" wheels have an adverse affect on my TPMS?
Last edited by repinS on Wed Feb 29, 2012 6:57 pm, edited 1 time in total.
Jerry /// Past: 95 SSEi (June 2010 COTM) -- 04 GXP (July 2011 COTM)
91 Honda Civic Wagon DX 2WD (fuelly) -- 208,000km -- 92hp -- Autocross Warrior
09 Lexus LS460 AWD -- 94,000km -- Daily Driver
09 White Hot G8 GT -- 155,000km (fuelly) -- LS3 Cam -- GM LS3 CNC Ported Heads -- Kooks 1 3/4" Long Tube Headers -- Solo Catback Midsection -- Hooker Maxflow Mufflers -- Pat G Tune -- Rotofab Intake -- Tein S-Tech Springs -- GXP FE3 Dampers -- BMR Subframe Cradle Inserts -- BMR Subframe Connectors -- Forgestar F14 Gold 18x9 +40 -- Michelin Pilot Super Sport 245/45/18 -- Maverick Man Carbon Fiber Spoiler
-
WoodyBalto
- SLE Member
- Posts: 32
- Joined: Sat Aug 16, 2008 2:33 pm
- Year and Trim: 2002 SSEi
- Location: Central PA
Re: Will 20" wheels have an adverse affect on my TPMS?
From what i have read, most of the wheels that are supposed to fit are 35 to 40 mm offset. would you say either would work?repinS wrote:GXP wheels are 18x8. The key to making 8.5" work will be the offset of the wheel you're considering. Too low and you hit your fender, too high and you won't clear the strut. If you were to err on a different tire size, I would go in the direction of slightly shorter than stock.
Hub-centric rings are absolutely key, also. Many aftermarket wheels have large hub bores in order to accommodate different makes and models of cars. Get the right spacer that will adapt the wheel to the 70.1mm GM 5x115 hub bore diameter. Sometimes you get lucky though - my aftermarket winter alloys are ~70mm to begin with.
Last edited by WoodyBalto on Wed Feb 29, 2012 9:23 pm, edited 1 time in total.
Disabled DRL's. Cleared the front turn signals lights. Infinity Kappas all around. Stainless. up swept quad exhaust tips. 180 T-stat, autolite 104's. 42k miles on motor with new LIM. 80k on car
-
excessive81
- SLE Member
- Posts: 75
- Joined: Tue Aug 18, 2009 9:55 pm
- Year and Trim: 2004 white diamond gxp
2000 sle ss
Re: Will 20" wheels have an adverse affect on my TPMS?
yes off set and hub sentric ring makes all the diffrence. wheel choice for us is very tuff. custom is way to go but that gets real $ real fast