25mm Spacers

[krishelnino]

I've done fair bit of research before getting spacers, the general consensus is that slip on type spacers used with extended wheel studs is a much better solution than bolt-on type spacers. Sure, they're much more expensive but is it worth risking your life? i would rather have some peace of mind because the wheel bolts directly onto the wheel studs rather than bolting to the spacer studs. The strength of bolt on spacer studs is always questionable and might be prone to failure, and i've seen horror stories of them being prone to failure so i wasn't comfortable going that route. I got my spacers from opmustang.com which is the only website that sells slip on spacers made specifically for the Mustang. They're bolt hub and wheel centric (there's a groove for wheel to center and fit directly on top of new spacer) and are made of high quality, the fitment is perfect.

I've made a thread about my setup here
https://www.mustang6g.com/forums/threads/arp-extended-wheels-studs-installed.111839/

I got 25mm at the front and 20mm for the rear, there's definitely some poke with 25mm at the rear and i couldn't find these type of spacers in 23mm sizes. Besides, i was worried about rubbing issues with the fender if i get 25mm so played it safe and got 20mm which is perfect IMO. I could definitely feel some difference in the way the car drives after getting the spacers on, feels more planted and glued to the road. I put 5k miles on this setup so far and haven't noticed any issues at all.

FWIW, my recommendation is to not go with the bolt-on spacers sold on AM, CJ, etc., do it the right way by getting extended studs and slip on spacers. The other solution is to get wider wheels with the right offsets.

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[boB]

I installed some bolt-on 25 mm spacers on an auto-x car (running slicks) years ago. After one season the spacers had numerous small cracks around the spacer studs. They did not fail but I only used them a couple times after finding the cracks.

Suspension geometry is sometimes set up so the imaginary line running through the ball joint pivots (or equivalent) intersects the centerline of the tire at the ground. This places even load on both sides of the tire to eliminate any tendency to pull to one direction or the other. Moving this imaginary contact line to the outside may increase tramlining. Ymmv...

 

[motodad]

the general consensus is that slip on type spacers used with extended wheel studs is a much better solution than bolt-on type spacers. Sure, they're much more expensive but is it worth risking your life? i would rather have some peace of mind because the wheel bolts directly onto the wheel studs rather than bolting to the spacer studs. The strength of bolt on spacer studs is always questionable and might be prone to failure, and i've seen horror stories of them being prone to failure so i wasn't comfortable going that route.

i agree! if wheel spacers are more of a long term use/solution, then replacing the studs for longer ones are the way to go!! it is weird that the slip-on spacers are not available in 23mm..

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