Wheel backspacing ?
 

I know this has been asked a thousand times. I just sold my 16 inch TTII's and am wondering what backspacing I would need for some 17's. They will be 17x8 in the front with factory disc brakes. The rears will be 17x91/2 with stock drums. Does the drum brakes make a difference on the backspacing because someday I would like to add disc on the rear. Also what would the max sizes and backspacing be for some 18's. Will I need to roll the lip on the rear with 17 x 9 1/2? Thanks


Scott

17X8" with a 4.75-5" b.s. and 245/45 works great. On the rears a 17X9.5" with 5.5" b.s. It will be tight to the inner wheelwell and may rub slightly there going into a driveway at a slant, but will also allow you to put discs on the rear in the future without buying new wheels. A 275/40 works very well in the rear.

Jody

Jody thank you very much. What front backspacing would be best, 4.75 or 5?

Scott

4.75 for sure.

If you are custom ordering the rims/BS I would go with 4 7/8" which is what DSE recommended when I ordered my Budniks from them. If you can't specify a specific BS then go with 5" BS as you can always add a spacer, but your stuck if you have clearance issues with 4.75".

When I had 17's, I used 4.75" of BS with a 245/45, it worked great.

Thanks guys. Scott what size rims did you run on back with your 17's? I want the 17 x 9 1/2 but I have drums and don't know when I can afford disc. Jody said the 5.5 bs would work but might rub until I can put disc's back there. If I'm only about to keep the drums would that b.s. still be ok or what shout it be. Just want to get all my ducks in a row before I order new wheels. Again guys thanks for taking the time to help. I just want to get it right.

Scott

Scott, I have the 9.5 on the back with drums (until this winter when the LT1's go on) and I have no problems at all.

How's schoolhouse life going there? Heard Jack Orrell is going there? PM me if you get a chance.

depending on the wheel you are getting i would have a custom set bulit also at 4-7/8 also thas what i run on my budniks

Thanks guys. Chris what is the b.s on your rims? Datsbad, is that 4- 7/8 on the front or rear. I am going with the Centerline Sundance retros.

Scott

Scott, I am running 4 3/4 BS on the front (17x8) and 5.5 BS on a 17x9.5 rear wheel. Datsbad is referring to the front BS 4 7/8. I think there are some minor differences in the 67-8 and the 69 wheel housings. What brakes are you running on the front? Do you have factory disks or do you have a C4/Baer set up? I know there are differences on the "track width" (think it is called) with the drum and disk spindles hubs. The disk style put the wheel about 3/8 inch further out than the drum hub. I would base my wheel offset on ones that are similiar to the one that you are going to use. Datsbad and Scott can give you better info on the 69 stuff better than I can. Hope this helps you.

i am refereing to the fronts BS , this is with drum spindles. disc spindles will push them out very little , enough to cause a problem if its that close.

Guys I have factory front disc brakes so is the 4.75 what I should go with?

Scott

I had factory disks on the front and went with 4.75" of BS. For the rear, I used 5.5" of BS, and that was with drum brakes to start. The tires rubbed the inner fenderwell when the body would roll hard like when entering an off camber driveway. The rubbing was very minimal - just enough to shine the paint. A few months after getting the 17's, I put Baer brakes on it and I had to roll the fenderlip just a little. I didn't know that it needed to do be done until I had 4 guys in the car. lol

Scott thank you very much. Just wanting to make the right decision before I order. I think I can handle a little rubbing until I can put disc on the rear.

Scott

Well how did they work?
 

Hey Scott I'm new to this form and read your question and all the replys to it. My question is how did the wheels work out? Thanks.