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'05 CTS-V
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Discussion Starter · #1 ·
I've searched through the faq and all the threads I could find on putting more meat out back, but I can't find anything definate on whether the offset on the wheel needs to change and if so what it needs to be. I'm planning on running 285/35 tires on 19x10 rims which I believe should fit from what I've read here, but what offset do I need on those rims? I'm going to have custom rims made and I don't want to drop a bundle on something that is going to be junk.
 

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Oregon Stealth said:
I've searched through the faq and all the threads I could find on putting more meat out back, but I can't find anything definate on whether the offset on the wheel needs to change and if so what it needs to be. I'm planning on running 285/35 tires on 19x10 rims which I believe should fit from what I've read here, but what offset do I need on those rims? I'm going to have custom rims made and I don't want to drop a bundle on something that is going to be junk.
7-3/8" backspace from the mount hub to the inside edge of the wheel , bare minimum. This puts the outer edge of the wheel even with the fender well.
In reality, the best rear rim width is 9.5 " but its difficult to come buy due to the limited supply of wheel hoops which are buyouts by most wheel manufactures. At this backspace you will have a curved face to clear the caliper. The reason the OEM wheel is flat is because it has no rim at all. Its a full face wheel.
 

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45 Posts
Discussion Starter · #3 ·
Thanks very much. Best info on rear clearance I've been able to find. :)
 
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