Can we fit 11" wide rear wheels on our cars?
Thread Starter
Senior Member
iTrader: (2)
Joined: Jun 2004
Posts: 647
Likes: 1
From: South Jersey
Car: 1991 RS Convertible
Engine: 96 LT1
Transmission: T5
Axle/Gears: 3.45 9-Bolt
Can we fit 11" wide rear wheels on our cars?
Hey guys,
I may have screwed up. I bid on a set of wheels I liked on E-Bay. However, I am not sure if they will fit my car. I bid really low, so I figured I wouldnt even win the bid. HOWEVER, I checked my E-Mail this morning... And WOW I WON!!!
The wheels are a replica set of 17" Chrome ZR1's.
Fronts:
17" x 9.5"
+56mm offset
7.4" Backspacing
Rears:
17" x 11"
+50mm offset
7.93" Backspacing
I have a 4th Gen rear axle that I am planning on installing soon. So I am hoping that that will take care of the rear wheels. I will probably have to get a set of spacers for the fronts. Any ideas how thick I should go?
Thanks for the help.
I may have screwed up. I bid on a set of wheels I liked on E-Bay. However, I am not sure if they will fit my car. I bid really low, so I figured I wouldnt even win the bid. HOWEVER, I checked my E-Mail this morning... And WOW I WON!!!
The wheels are a replica set of 17" Chrome ZR1's.
Fronts:
17" x 9.5"
+56mm offset
7.4" Backspacing
Rears:
17" x 11"
+50mm offset
7.93" Backspacing
I have a 4th Gen rear axle that I am planning on installing soon. So I am hoping that that will take care of the rear wheels. I will probably have to get a set of spacers for the fronts. Any ideas how thick I should go?
Thanks for the help.
Senior Member

Joined: Mar 2004
Posts: 923
Likes: 2
From: Bakersfield, CA
Car: 91 Z28
Engine: 383 SuperRam
Transmission: ProBuilt 700r4
Axle/Gears: G92 3.23
you will need 2" wheel adapters to fit the wheels all the way around to make up for the offset, our cars require 0mm offset +/- a few. with the 4th gen rear, im not sure, you would have to do a test fit to make sure. 275/40/17 are needed, but with the 11" rear wheels the tires will look weird on the rim, so if you can make them fit, go with 315/35/17
Supreme Member
Joined: Apr 2003
Posts: 2,070
Likes: 0
From: Tempe, Arizona
Car: 96 Silverado/99 Suburban
Engine: 700 cubic inches of 'Muican Awesome
Transmission: 4L80/4L60
Axle/Gears: Chunky/Clunky
Check this out...
https://www.thirdgen.org/techbb2/sho...hreadid=230160
https://www.thirdgen.org/techbb2/sho...hreadid=230160
Member
Joined: May 2003
Posts: 422
Likes: 0
From: dallas,tx
Car: 1987 Trans Am
Engine: tree-fiddy
Transmission: 700r4
Originally posted by 90RS305
Check this out...
https://www.thirdgen.org/techbb2/sho...hreadid=230160
Check this out...
https://www.thirdgen.org/techbb2/sho...hreadid=230160
Thread Starter
Senior Member
iTrader: (2)
Joined: Jun 2004
Posts: 647
Likes: 1
From: South Jersey
Car: 1991 RS Convertible
Engine: 96 LT1
Transmission: T5
Axle/Gears: 3.45 9-Bolt
Its awesome till you have to buy tires. The cheapest decent ones I can find are $250 a pop!!!!! The way that I go through tires, I would have to get a 2nd job to afford them!!! I think I am going to go with 9.5" rear wheels. Mabey I will get the 11 inchers and just use them when I go to shows?
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