Backspacing question

[jbp99cobra]

What is the backspacing for our cars? I have an opportunity to get some 15x10 drag wheels with a 4.5 backspacing. They gonna fit?

Thanks,

John

 

[Almo]

I would not recommend going with a 4.5 back spaced wheel... you need least a 5.5 in my opinion.

15X8 (5.5) with a 26X10 inch slick almost sits flush with the fenderwell.
15X10 and you will need 6 at least... 6.5 is the better fit.

Cheers,
Allen

 

[Almo]

15X8s with 5.5 back spacing with a 26X10 MT full slick.

Two pictures below 15X10 with 6.5 back spacing with a 325/50-15 MT drag radial.

15X10 with 6.5 back spacing with a 28X11.5-15 MT full slick.

 

[jbp99cobra]

what about with a spacer? Would that help at all?

 

[Almo]

Yes, you could go that route. Just remember to tighten your lug nuts periodically.

 

[jbp99cobra]

Yes, you could go that route. Just remember to tighten your lug nuts periodically.

Thanks! Next... a pair of slicks:-D

and by the way... your car looks pretty damn sick:rockon:

 

[Hissssnsvt]

what about with a spacer? Would that help at all?

NO!

With a 15x10 rim w/ a 4.5" BS, the tire will stick out past the fender 2" more then the pics Allen posted of his car with 15x10 rims w/ a 6.5" BS. A spacer will only cause the wheel to stick out more. Remember your backspace is the distance from the inner lip of the rim to the inside of the hub. The more BS you have, the farther your tire will sit inside the fenders.

 

[TRBO VNM]

uh oh, john's getting serious...hahaha.

hows the car running? nice safe tune in there I hope.

 

[jbp99cobra]

uh oh, john's getting serious...hahaha.

hows the car running? nice safe tune in there I hope.

:-D Car is running great, with the exception of a bad idler pulley. Already have the replacement and just gotta throw it on. Also found a minor oil leak (the connection for the oil pressure gauge), but no big deal... easy fix. Tune is very safe and only sees 5lbs of boost. A smaller blower pulley is in the near future as well. Nothing too crazy though. Maybe up it to 8 or 9lbs and a little more timing.

 

[TRBO VNM]

:-D Car is running great, with the exception of a bad idler pulley. Already have the replacement and just gotta throw it on. Also found a minor oil leak (the connection for the oil pressure gauge), but no big deal... easy fix. Tune is very safe and only sees 5lbs of boost. A smaller blower pulley is in the near future as well. Nothing too crazy though. Maybe up it to 8 or 9lbs and a little more timing.

freaking awesome man. very glad you are happy.

BTW, can I say I told you so about the oil pressure gauge..hahaha.

please just invest in an electric. I haven't forgotten about you, hope to have a cowl piece for you to pick up soon.

 

[01Lowboy]

:-D Car is running great, with the exception of a bad idler pulley. Already have the replacement and just gotta throw it on. Also found a minor oil leak (the connection for the oil pressure gauge), but no big deal... easy fix. Tune is very safe and only sees 5lbs of boost. A smaller blower pulley is in the near future as well. Nothing too crazy though. Maybe up it to 8 or 9lbs and a little more timing.

Glad to hear your happy with it john.:thumbsup:

 

[Almo]

NO!

With a 15x10 rim w/ a 4.5" BS, the tire will stick out past the fender 2" more then the pics Allen posted of his car with 15x10 rims w/ a 6.5" BS. A spacer will only cause the wheel to stick out more. Remember your backspace is the distance from the inner lip of the rim to the inside of the hub. The more BS you have, the farther your tire will sit inside the fenders.

Thanks Ken! I was thinking more along the lines of 1/4 spacer with a 15X8 wheel pending what tire he would go with. I had stated min 5.5 back space and Jon, if you were still thinking 4.5 then no... again, I wouldn't bother. 5.5 min as stated above and that is a 15X8 wheel. 15X10 and you will need a least 6 and you will be limited on true 10.5 tire or the sidewall will also stick out a bit.