Backspacing on a 17x9 wheel

[smiths86cutlass]

Ok so I found a set of 17x9 Hot Wheels mags with a 5" backspacing with a 245/45 17 inch tire. Can I run these on my 1986 Cutlass Supreme with no rubbing? Or should I stay closer to a 4.5 inch backspace. I plan on doing the LS rear brake swap and blazer front brake swap also. Thanks in advance

 

[Injectedcutty]

I'm thinking you're gonna need a spacer to avoid rubbing the frame. The only way to truly know is try to mount it, and see where the contact points are....helpful hint: put some white chalk on backside of wheel/tire so that it will transfer to the interference areas.

Unfortunately, our cutlass' don't have the wheelwell space like the monte's and regals due to the squared off openings.

 

[smiths86cutlass]

I'm thinking you're gonna need a spacer to avoid rubbing the frame. The only way to truly know is try to mount it, and see where the contact points are....helpful hint: put some white chalk on backside of wheel/tire so that it will transfer to the interference areas.

Unfortunately, our cutlass' don't have the wheelwell space like the monte's and regals due to the squared off openings.

Yeah I figured the odd wheel well shape kind of limits things...I found a set of the above wheels and tires for $650 but I might just keep the ones I have and get the blazer rear disk brake setup to run 15 inch wheels.

 

[Injectedcutty]

That's pretty friggin cheap for wheels and tires. It would almost be worth getting them and running a hubcentric spacer to move the wheels out.

Maybe one of the guys with LS rear brakes can confirm, but i believe those brakes move the wheels out a tad.
I have blazer front brakes that are ready to install, just need tires for my new 17's. The blazer fronts move the wheels out 3/16" per side.

 

[smiths86cutlass]

That's pretty friggin cheap for wheels and tires. It would almost be worth getting them and running a hubcentric spacer to move the wheels out.

Maybe one of the guys with LS rear brakes can confirm, but i believe those brakes move the wheels out a tad.
I have blazer front brakes that are ready to install, just need tires for my new 17's. The blazer fronts move the wheels out 3/16" per side.

Yeah and the tires have plenty of tread left Ventus HR2's

 

[Injectedcutty]

If i were you...i would be all over those! I've got $800 wrapped up in just my wheels which is about what those cost new. You could even make a custom little center cap sticker for em.

 

[Canon_Mutant]

Unless the LS brake conversion does something dramatic, you should be OK in back. My 15x7s SSIIIs and their 4.0 BS had 1.7 to the frame in back with 245 rubber. So, a 17x9 with 5.0 and 245 rubber should give you .7 . . . I'd be a little concerned up front though. I went ahead and stayed 4.0 on my 17x8s up there to push things out with my 245s plus pushing those fronts out so the outside of the tread is closer to the outside of the rear is supposed to help just a little with the tendency to under steer. But nothing a spacer won't help if you want to give them a try? . . . Nice wheels and tires to boot at a VERY nice price BTW!

 

[Alerch]

These wheels are 4.5 back space but are 17x8 with a 245/45R17 tire. I have rear disc brakes as well.

 

[crotchss]

I am running 17x9.5 rears with 5" BS on my SS with 285/40's. She is close but clears the frame, since I lowered her 2" the tires will actually rub the wheel well lip if you go through a big dip in the road fast and the rear springs compress quickly.

 

[-83MONTESS-]

My 17x9 Torque Thrusts with 5" would clear just the wheel itself but very tight. When I put the tires on they rubbed. Frame notch fixed that.