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View Full Version : Dad's 78 Trans Am (pics), help needed with 18" backspacing



BT68c10
01-21-2016, 08:05 PM
Hey guys my Dad is looking into 18 inch snowflake wheels for his TA and I have been trying to help him with backspacing. I know that the info is probably out there, but I don't have time to do the amount of research I need to and would like to hear from guys with first hand experience. I can't afford to miss the mark on my dad's wheels! The car is stock body and tubs with the seat belt pump massaged. It has the Pro Touring F-body comp kit which includes the leafs, sways, tubular upper and lower control arms, and subframe connectors. We have been looking at the wheels in the link in except with grey centers, they are 18x8 4"bs front/18x9 5" bs rear, but they can change the backspacing if you want.

http://www.ebay.com/itm/18-PRO-WHEELS-SNOWFLAKE-BILLET-ALUMINUM-RIMS-INTRO-FOOSE-BOYD-PONTIAC-YEAR-/172069242807?hash=item28102047b7:g:9hcAAOSw9mFWNAM Q&vxp=mtr

Are these sizes and backspacing ok? It looks pretty close to what I have seen in my limited research. We just want a nice aggressive fitment without running into an major rubbing issues. Any help would be appreciated, here are some pics!

https://static1.pt-content.com/images/pt/2016/01/IMG_0575_zpsiivq2war-1.jpg~original (http://s1369.photobucket.com/user/bjt0004/media/resized/IMG_0575_zpsiivq2war.jpg.html)

https://static1.pt-content.com/images/pt/2016/01/IMG_0573_zpskwhxscxf-1.jpg~original (http://s1369.photobucket.com/user/bjt0004/media/resized/IMG_0573_zpskwhxscxf.jpg.html)

https://static1.pt-content.com/images/pt/2016/01/IMG_0577_zpszw7omed8-1.jpg~original (http://s1369.photobucket.com/user/bjt0004/media/resized/IMG_0577_zpszw7omed8.jpg.html)

https://static1.pt-content.com/images/pt/2016/01/IMG_0576_zpsmztjblde-1.jpg~original (http://s1369.photobucket.com/user/bjt0004/media/resized/IMG_0576_zpsmztjblde.jpg.html)

Skip Fix
01-25-2016, 04:10 PM
What seats?

badazz81z28
01-25-2016, 05:37 PM
As much as the right answer is hard to hear, to ensure a perfect fit, you need a wheel fitment tool with the tire size you want to run