Wheels and sizes

[Clutch]

Spacer are awful. I have had studs break and lost wheels from running a 1/8" shim spacer, but my 2+2 has run thousands of miles above 120 mph (up to 168mph) with 1.5" wheel adapters in back and I've never had an issue with them. I don't think I would use them with a high HP car launching with slicks, but the axles in a 7.5" rear will break with 300 less HP than would take to break wheel adapters.

When I used 1/2 spacer with slicks I had some issues lol they suck the adapters I never used myself but a frnd of mine did on a dart with a 440 and a 4speed and lost a wheel trashed a quarter panel I'm just afraid to go there

 

[Matthew Goeke]

Wow .... still not shore I trust them and I'm not doubting you I just don't trust them

This guy is a Mechanical Engineer

 

[Clutch]

This guy is a Mechanical Engineer

Ok I get it and I know we're I went wrong

 

[Matthew Goeke]

does anyone know if this means i have 14" wheels?

 

[airboatgreg]

I put some hub centrics on the rear of my car. Minimal thickness to clear 60's series BFG's. Don't go radical. I did not change studs

 

[UNGN]

does anyone know if this means i have 14" wheels?

What do the tires say?

 

[motorheadmike]

Another option: http://www.motorsport-tech.com/

As for adapters and spacers not being robust enough to handle the rigours of street and racing use: They work fine.

 

[motorheadmike]

This guy is a Mechanical Engineer

I don't get Youtube at the office, but if that is the "Engineering Explained" kid - LOL. I'll pass on his advice - he has no real practical experience. Just lots of conjecture and an educated opinion like most engineers.

 

[Gozer442]

Will regional road laws allow spacers?

 

[motorheadmike]

Will regional road laws allow spacers?

Depends on what you have. The wheels on my wagon, made by Ronal, have integral hubcentric wheel spacers designed into them. Some 3rd Gen F-bodies had 1LE packages which widened the front track, most didn't - so to clear the tire rods the spacers are added. Also, some 3rd Gen F-bodies w/16" wheels had 1/8" steel shim spacers added from the factory in the rear (https://www.thirdgen.org/forums/suspension-chassis/522870-factory-iroc-wheel-spacer.html and https://www.thirdgen.org/forums/suspension-chassis/96101-iroc-z-rear-wheel.html) - so if you have an OEM part there is nothing to prevent you from using them.

I am quite certain other OEMs have used spacers over the years too. The MTO wheel spacer law has to do with stanced-out Hondas, not a muscle car guy with a bit of outter tie rod rub.