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How much backspace do you need?

Posted: Tue Oct 05, 2004 12:30 pm
by Mudzuki
Looking to get some 15x8s soon and i am wondering how much backspace i need.

Did a search and found this site with good explanation:

http://www.rsracing.com/tech-wheel.html#backspace

Is a 4 inch backspace enough, and available off the shelf?

Was looking at some bling eagle alloys for F100, and they have a backspace of 3.25"

Image

Also, what is the zook stud pattern?

Posted: Tue Oct 05, 2004 1:13 pm
by bigsteve
It all depends on what tyre size.

with 31's 4 inch backspacing could be OK but with 34's you won't be able to turn.

I have 2.5 inch back spacing and just touch the springs on full lock

Posted: Tue Oct 05, 2004 3:17 pm
by Mudzuki
Was looking at running either 33" or 34" Jungle Trekkers, running 2" BL and springover.

Would 3.25" backspace will reduce turning circle too much?

Posted: Tue Oct 05, 2004 3:29 pm
by sierrajim
SPOA in VIC? or are you planning to move to NSW? :lol: :lol: :lol:

Anyway, i just had to say that.

SPOA + 2" BL will lift your rig around 6 inches plus the extra height in the tyres. I'm not saying don't do it but if you do make sure you have a good roll cage.

You (with a little cutting) may clear the 34's with SPOA & RUF and no body lift.

Posted: Tue Oct 05, 2004 3:37 pm
by bigsteve
Mudzuki wrote:Was looking at running either 33" or 34" Jungle Trekkers, running 2" BL and springover.

Would 3.25" backspace will reduce turning circle too much?


Turning circle or scrub radius???

Posted: Wed Oct 06, 2004 2:38 pm
by Mudzuki
Turning circle or scrub radius???


Scrub radius is what restrict the turning circle isnt it?

Posted: Wed Oct 06, 2004 4:29 pm
by N*A*M
2.5" BS with JT2 still rubbed on the springs and needed steering stops (which are also quite a hassle)

Posted: Fri Oct 08, 2004 11:54 am
by Mudzuki
Anybody know how much backspace the rockcrawler rims have?

Posted: Fri Oct 08, 2004 3:04 pm
by bigsteve
Mudzuki wrote:Anybody know how much backspace the rockcrawler rims have?


NAM's were rock crawler's and as he said had 2.5 back spacing

I currently have a set of four 2.5 inch back spaced 15X7's for $250 if your interested.

Steve

Posted: Fri Oct 08, 2004 3:31 pm
by Mudzuki
I really need 15x8s with the jungle trekkers. I prefer the wider tyres.

Posted: Sun Oct 10, 2004 4:58 pm
by kowntafit
Anyone know what 16" rims will fit the sierra? I'm after 16x8s and having a real hard time finding anything. I think jeep rims may be the way to go. I think cj rims fit but do these come in 16"?

Posted: Sun Oct 10, 2004 11:15 pm
by bigsteve
kowntafit wrote:Anyone know what 16" rims will fit the sierra? I'm after 16x8s and having a real hard time finding anything. I think jeep rims may be the way to go. I think cj rims fit but do these come in 16"?


Do a search in the for sale section

I know a set of 16X8's with custom offset were up for a sale a while back by a melbourne bloke.