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10-01-2019, 08:56 AM #1
TT 2's for sale but questions 1st
I'll be selling a set of 17x9 and 17x11 polished TT2's sometime in the near future but had a couple questions about fitment. I had them on my 96 Impala but they were always the wrong size (the rears rubbed quite a bit). They were on the car when i bought it so i don't know the actual backspace. I asked American Racing if there was a number on the wheel itself to tell me the size but they said no. I havent owned an F body in a while but i remember 17x11 fitting on the rear so im wondering if they are the Fbody offset that someone just stuck on the Impala. So my question.... Is there an accurate way to measure backspace? What size wheel fits on the Fbody? It will help to know when selling to let people know what they fit.
1996 Impala SS 383/T56
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10-01-2019, 09:15 AM #2LTx Guru
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- Apr 2013
- Name
- Fred
- Vehicle
- 1994 Formula - SOLD
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- Central NJ
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Put the wheel front face down on the ground. Put a straight edge across the back of the full diameter of the rim. Measure the distance from the bottom of the straight edge to the hub mounting surface. That is the backspace.
The limit for rear wheel backspace on a 4th Gen F-Body is 8.0”. Even that may require trimming the bump stop brackets, hammering the inner fender liners, and possibly re-centering the chassis side-to-side over the rear axle assembly, with an adjustable panhard rod.
What is the bolt circle on the Impala. F-Body is 5 x 4.75” (120.65mm).SOLD - GONE TO A (VERY) GOOD HOME ! - 94 Formula A3+1: 381ci forged stroker - Callies Stealth, Oliver 5.85 billet rods, BME nitrous pistons / CNC LT4 heads / CC solid roller / TH400+GearVendors OD / 4.11 Strange 12-bolt / 300-shot N2O / Spohn Suspension / roll bar / MoTeC M48 Pro engine management system /a few other odds 'n ends.
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10-01-2019, 09:22 AM #3
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10-04-2019, 08:40 AM #4Xtreme Member
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- Nov 2012
- Name
- Shaun
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- 1994 Formula
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- Phillipsburg NJ
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- 7,249
Supporting Member2021 Charger Scat 392
1994 Firebird Formula 381 stroker - Carrying the torch! - 9.90 @ 134.3mph on a 200 shot
The wrench/driver for LTConvert's 94 Z28- Ellwein 383/LE Trickflows/ D1SC / CPT Ultra Pro Race 4L60E
10.78 @ 125mph. Shooting for 9.99 for Frank Cahall!
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10-07-2019, 09:45 AM #5
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