OBS Backspacing Question and Tire Size

[twiztid92chevy]

I'm thinking of going with either 18s or 20s on my truck, prob 18s since it's a daily driver and I live in the city. I'd like it to tuck with air ride. Probably ARTs Cool Ride up front and thier newer 4 link triangular rear setup.

I'm thinking 18x8 in the front and 18x9.5 in the rear.... what kind of backspacing would I need? Also what size tires would you recommend? I'd like to stay as wide as possible and still have a good size sidewall, but be able to tuck when I finally get my air ride set up. Not looking to lay frame or anything that extreme.

[Sweet Tea Man]

i believe its 5.5" backspacing to tuck on an 8" rim. i'm sure someone else will know for sure. i'm about 95% sure

[thecodeman]

5.25" on 8" and 5.5" on 8.5" to be sure. 5.75" on 9", 6" on 9.5" and 6.5" on 10:D

[Sweet Tea Man]

ok, so 5.5 on 8.5. got it:D

[thecodeman]

Thats what I had on my intros and they tucked beautifully!
http://img.photobucket.com/albums/v181/thecodeman/My%20truck/new086.jpg

[Izzy]

5.25 on 18x8 and 6 on 18x9.5 on the 98's Intro's. :D

[ARVCUBE]

so both the front and the back use the same backspacing to tuck?

[thecodeman]

yes. I had 4 20x8.5" wheels, all the same 5.5" backspacing.

[Mike]

I have 18x8's in front with 5" backspace, and 18x9.5's in back with 6" backspace. Front tires are 255/45/18, rears are 275/40/18

[twiztid92chevy]

Mike, love the way your truck looks, any problems with driving with that size tire? is it possible to have a larger sidewall with at least a 275?

[Sick Boy]

:wink: Thats what I had on my intros and they tucked beautifully!
http://img.photobucket.com/albums/v181/thecodeman/My%20truck/new086.jpg

Nice rim and design choice.

[thecodeman]

Thanks, too bad im running steel rallies and 275/35 uniroyal tiger paws until the new intros are built :puke:

[Beyond Static©]

Im runnin 20x8.5's with 5.25" of bs. with 265/35/20s. Fat tire, and it tucked on my daily driven 6/8 drop, and now with bags

[Mike]

Mike, love the way your truck looks, any problems with driving with that size tire? is it possible to have a larger sidewall with at least a 275?

No problems whatsoever. Rides nice and smooth at 80psi all around. You can get a higher profile tire in the back if you want, but I was trying to stay as close to 27inches as I could.

[twiztid92chevy]

80psi? is that the tires or your bags? What kind of rim is that too?

[Mike]

80psi in the bags, Boyd Coddington Timeless 5's

[Sick Boy]

Thanks, too bad im running steel rallies and 275/35 uniroyal tiger paws until the new intros are built :puke:

Same here, what design will you be going for this time?

[addiction2bass]

would those be the same sizes for laying frame?
im gonna be baggen my truck next year for sure and well id like to get the rims first so i got a nice look and even killer when i lay it down low.......
im looken at 20s now instead of 18s like i originaly decided to do.... and well ive been coned into 20s.LOL

[thecodeman]

Same here, what design will you be going for this time?
20" intro V-rods.

[ARVCUBE]

5.25" on 8" and 5.5" on 8.5" to be sure. 5.75" on 9", 6" on 9.5" and 6.5" on 10:D

does this rule apply to stock spindles or drop spindles that don't push the wheel out 3/4" like the belltech's do (from what i've heard). i have the belltech's and it seems like my tires are out a little bit...im looking at 20 x 8.5 rim with +15mm offset which translates to about 5.34" of backspacing. will this rim plus my belltech's still tuck on my burb?

[Mike]

does this rule apply to stock spindles or drop spindles that don't push the wheel out 3/4" like the belltech's do (from what i've heard). i have the belltech's and it seems like my tires are out a little bit...im looking at 20 x 8.5 rim with +15mm offset which translates to about 5.34" of backspacing. will this rim plus my belltech's still tuck on my burb?

The belltech push-out is only a problem if you have a NBS truck. OBS trucks dont have that spindle issue.

[mcfly]

5.25" on 8" and 5.5" on 8.5" to be sure. 5.75" on 9", 6" on 9.5" and 6.5" on 10:D
why is the step from 9.5" to 10" bigger (.5" bs diff)?

what is the widest wheel that will fit inside the wheel housing without too much chopping?

[ARVCUBE]

The belltech push-out is only a problem if you have a NBS truck. OBS trucks dont have that spindle issue.

is that right...? coo...

[mccustomize]

ur2hi is selling a perfect 18/20 combo with tires that tucks perfect, check it out in the forsale section

[ARVCUBE]

Im runnin 20x8.5's with 5.25" of bs. with 265/35/20s. Fat tire, and it tucked on my daily driven 6/8 drop, and now with bags

how is your turning radius with that tire setup? any rubbing issues lock to lock? im looking to get the biggest tire i can run and still be low on my burb. i still have the fender liners up front. im running the stock 235-75-15 and when i air it out, the inner fender sits on the front tires...without them i think my front will lay out..also, would i have clearance my rear wells with that size tire? any help appreciated. thanks...

[1badgmc]

Front: 19x8 5" backspacing 245/35-19 tires
Rear: 20x10 6" backspacing 285/30-20 tires

http://memimage.cardomain.net/member_images/4/web/316000-316999/316002_7_full.jpg

The rears really should be 6.5-7" or so, but they work with my setup and I love the deeper dish look anyhow. :cool:

[mcfly]

man your truck is so awesome :worship:

what did you have to modify to fit those wheels in the back?

[1badgmc]

what did you have to modify to fit those wheels in the back?

Not a damn thing. My fender lips were already shaved nearly off from when I had my 17's and 305/45 tires, so they fit without any further modifications. When aired down, I can squeeze a pinky finger between the wheel and the fender lip.

[mcfly]

what size/bs were your 17s? tires up front? you don't happen to own those 17s anymore? ;)

[1badgmc]

17x8 and 17x9.5
Not sure of the backspacing on them, though. I had 245/45s in front. Sorry, don't have 'em anymore. A buddy of mine has 'em now.