Need help on fitment

[Mustang_Scotty]

I’m sure this is the millionth time for this question but I think it can be answered by someone here quickly. I actually called Roush but they couldn’t help that much.

I have a 2010 Stage 3 with the 20” package. They only specs Roush could give me was they were 20x9 square. I am looking to get Velgen VMB9s. They make 20x10.5 45offset. I know they fit the rear but will they fit all around with 285/35’s? Will I need spacer in the front? Currently there are 275/35 on all corners but I figured if I put those tires on a 10.5 rim it would be stretched. Thanks for any help.

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[NightmareMoon]

285/35 on a 10.5 would be fine (just slightly stretched in a good way)

However, a 10.5 ET45 won't fit the front without a decent spacer, like 10mm-25mm. The PP2 uses a 10.5 ET34, which equates to a ~20mm spacer for your ET45 wheel. With extended studs, you could run a 15mm spacer which would be about perfect.

 

[Mustang_Scotty]

285/35 on a 10.5 would be fine (just slightly stretched in a good way)

However, a 10.5 ET45 won't fit the front without a decent spacer, like 10mm-25mm. The PP2 uses a 10.5 ET34, which equates to a ~20mm spacer for your ET45 wheel. With extended studs, you could run a 15mm spacer which would be about perfect.

Someone told me a 5 mm spacer with a 275/35 in front. If I use a 15 mm spacer would it look funny, not even with the back? I guess what I’m asking is will the front stick out further than the back?

This was from another post, granted its an S550

 

[NightmareMoon]

Someone told me a 5 mm spacer with a 275/35 in front. If I use a 15 mm spacer would it look funny, not even with the back? I guess what I’m asking is will the front stick out further than the back?

This was from another post, granted its an S550

8 /= 5. A 8mm will be shaving it very very closely on the inside. You are also sitting at or just below the threshold for safe thread engagement with a 8mm spacer and stock studs, which is why I don’t recommed it. Spacers wider than 5mm really need extended studs. No sense if cutting your safety margin there and loosing a wheel. I’ve seen that happen to a friend’s car. It made the worse noise as his subframe and rotor scraped across the pavement and luckily he didn’t slide into anything

 

[Mustang_Scotty]

So if I purchase the 10 or 15 spacer with studs attached already I should be fine, no? And will The fronts look even with the back?

 

[NightmareMoon]

So if I purchase the 10 or 15 spacer with studs attached already I should be fine, no? And will The fronts look even with the back?

I don don't know of any bolt on spacers in the 10-15 range that will normally work. The wheels need a recess for the stock studs, and the narrower the spacer, the larger the recess required.

You'll have to consult someone else who actually uses bolt on spacers, I don't use those, but IIRC you'll have to step up to at least an (edit) 23mm spacer (or something like that), and that's entering poke territory if you're running stock camber. With a 20mm bolt on spacer you have to trim the stock lugs or something.

The wheel is just an awkward offset for a front wheel on these cars. If you invest in replacing the studs with 0.5-1" longer replacement studs, you can run a slip on spacer which would be ideal. Most people won't make the effort to do that.

 

[Mustang_Scotty]

I’ve used spacers before and on the new wheel there is sufficient opening for stock studs. If it don’t work I’ll have 2 rims for sale lol

 

[Mustang_Scotty]

What I need to know is what’s the minimum offset for the front. 32?

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