Yet ANOTHER backspace question

[JCampbell]

Can't believe I can't get this into my head yet. Search results came up inconclusive.

20x8.5" rear wheel. Recommended backspace? Same as front: 5"?

[Not bagged, 6" drop in rear]

[lolife99]

No.
Most 10's require a 5.5" BS.
So that equals a 4" BS on a 8.5" wheel mounted on the back.
(remember the front track width is wider than the rear track width).

Break out a tape and verify this.

[JCampbell]

Sooo...if I went 8.5s all the way around, I'd have to get them in two different offsets (front and rear)?

[mgchevyparts]

Most wheels are cast so you won't have a choice of BS, cast wheels usually come one way, so which wheel are you looking at, and what is it's back space?

[lolife99]

Originally Posted by JCampbell

Sooo...if I went 8.5s all the way around, I'd have to get them in two different offsets (front and rear)?

yes.
Or run spacers on the rear.
That's why most people run 8's and 10's or 7's and 8's.
It help hides the wider front track width of these trucks.

[JCampbell]

Gotcha. So I could go 5" BS all the way around and run a 1" spacer on the rear, correct?

[JCampbell]

I really don't know why I find this such a hard concept to grasp...

I found a set of 20x8.5 w/ 4.5" of BS. Will this work for me. 4.5" will pull the wheel 1.2" to the *inside* versus a wheel w/ 5" of B.S., correct? So worst case, I could run a 1/2" spacer up front.

[lolife99]

Originally Posted by JCampbell

I really don't know why I find this such a hard concept to grasp...

I found a set of 20x8.5 w/ 4.5" of BS. Will this work for me. 4.5" will pull the wheel 1.2" to the *inside* versus a wheel w/ 5" of B.S., correct? So worst case, I could run a 1/2" spacer up front.

No.
BS is measure on the backside of the wheel.

Higher the "backspace number",... the more it will tuck under the fender.
5" backspace wheel will tuck 1/2" more than a 4.5" backspace wheel.
(as long as the wheels are the same width).

[JCampbell]

So is 4.5 a no-go on a 5/7 drop then?

[lolife99]

I my opinion you need a 5.25" bs on a 8.5" wheel up front.
Posted via Mobile Device

[slugish]

Originally Posted by lolife99

I my opinion you need a 5.25" bs on a 8.5" wheel up front.
Posted via Mobile Device

x2 with low life

got 9.5 rims on back with 4 in B.S.bout as much as can work ---> close but ok

got 8 in rims on front with 5.5 b s -> could have gone with 5 in or possibly 4.5
Im running 17 in rims w/ a 5.5 - 7 drop .

hope this helps > think low life is right on the mark

[wraprail]

.....High Positive Offset____________________________High Negative Offset (aka "reversed")