What offset should i get?

[itr.#1446]

I am planning on purchasing a 20x10 rockstar wheel to run on my truck with 35x13.5 tires i picked up. I have a kore recon series lift kit and was wondering what offet i should run? I have a pic of my current wheel and offset(kinda crappy) but it rubs a tad bit sometimes at full lock on my power wagon flares. What do you guys suggest?

Here is my current wheel


i like the offset and stance but cant remember what the box said i think it was -12mm does that sound right?

__________________
05 2500 fass cfm intake k&n kore recon lift ssi track bar and steering brace 20" hoss wheels with 35's m.t. baja a/t's smarty pod mp8 5 inch single stack II silver 62 ats manifold pyro boost rail pressure 13.7 at 102 with a 2.0 60ft

[PuffPuffPass]

I've always heard.. Run an 8.5 wide wheel with 6" of backspacing. I have a KORE Prerunner kit, and was told that with some minor trimming I could run 37X13.5X17's on a Weld 8.5X17 with 6" of backspacing. When I look at it, I just can't see 37X13.5 fitting, but I've been wrong before.. Try giving Jeremy at DRC or KORE a call, they will tell you exactly what you need.

KORE has been responding to my emails within an hour or two lately.. During business hours.

__________________
'04 3500 :: KORE coils :: DUNKS arms :: THUREN trackbar :: DEFIANT steering brace :: TOYO m/t :: K&N filters ::

[itr.#1446]

you plan on running a 13.5 wheel on a 8.5 wide rim ? i thought i would be cutting it with my 9" wide wheel thats why i wanna upgrade to a 10".

__________________
05 2500 fass cfm intake k&n kore recon lift ssi track bar and steering brace 20" hoss wheels with 35's m.t. baja a/t's smarty pod mp8 5 inch single stack II silver 62 ats manifold pyro boost rail pressure 13.7 at 102 with a 2.0 60ft

[Eric]

-12mm offset on a 10" wide wheel will cause your tires to stick out a lot. You will rub bad with the Recon in my opinion.

[itr.#1446]

Originally Posted by Eric

-12mm offset on a 10" wide wheel will cause your tires to stick out a lot. You will rub bad with the Recon in my opinion.

Yeah i need something about the same or alittle more in towards the hub right?

__________________
05 2500 fass cfm intake k&n kore recon lift ssi track bar and steering brace 20" hoss wheels with 35's m.t. baja a/t's smarty pod mp8 5 inch single stack II silver 62 ats manifold pyro boost rail pressure 13.7 at 102 with a 2.0 60ft

[Eric]

Originally Posted by itr.#1446

Yeah i need something about the same or alittle more in towards the hub right?

According to my math, your tire will stick out about 3.75" farther than stock. More backspacing or increasing the postive offset will reduce that number.

[itr.#1446]

Originally Posted by Eric

According to my math, your tire will stick out about 3.75" farther than stock. More backspacing or increasing the postive offset will reduce that number.

Yeah thats way too far out, i found a graph if i got +1 mm offset it says i will be the same distance out i think, if i did it right.
Wheel Offset Calculator

__________________
05 2500 fass cfm intake k&n kore recon lift ssi track bar and steering brace 20" hoss wheels with 35's m.t. baja a/t's smarty pod mp8 5 inch single stack II silver 62 ats manifold pyro boost rail pressure 13.7 at 102 with a 2.0 60ft

[Eric]

Originally Posted by itr.#1446

Yeah thats way too far out, i found a graph if i got +1 mm offset it says i will be the same distance out i think, if i did it right.
Wheel Offset Calculator

That calculator only uses the wheel size - don't forget your tires are 3" wider than stock. The number I gave you above was for the new wheel/tire combo. +1mm offset would be better than the -12mm offset if they offer that size.

[bigdan65]

I am running 20x9 Gear Alloys with 5.4 bs with 35/12.5 pro comps they stick out some but do not rub at all

__________________
2005 QC 4x4 TRE trans, PML, Leveled HBS,Blistien,PSC, Smarty TNT R,FBD 5in exhaust, CFM+, grid heater delete,MPI Twins,ARP studs, 80hp inj, Hamilton springs,Banks IC,Air Dog 150, optix boost,egt and trans temp

[itr.#1446]

yeah im gonna check now and see what offsets they offer.... what the diff between the offset number and back spacing number?

__________________
05 2500 fass cfm intake k&n kore recon lift ssi track bar and steering brace 20" hoss wheels with 35's m.t. baja a/t's smarty pod mp8 5 inch single stack II silver 62 ats manifold pyro boost rail pressure 13.7 at 102 with a 2.0 60ft

[itr.#1446]

Originally Posted by Eric

That calculator only uses the wheel size - don't forget your tires are 3" wider than stock. The number I gave you above was for the new wheel/tire combo. +1mm offset would be better than the -12mm offset if they offer that size.

I am currently running a 20x9 with 275/60/r20 and want to upgrade to 20x10 35x13.5

__________________
05 2500 fass cfm intake k&n kore recon lift ssi track bar and steering brace 20" hoss wheels with 35's m.t. baja a/t's smarty pod mp8 5 inch single stack II silver 62 ats manifold pyro boost rail pressure 13.7 at 102 with a 2.0 60ft

[Eric]

Originally Posted by itr.#1446

yeah im gonna check now and see what offsets they offer.... what the diff between the offset number and back spacing number?

This site has always helped me:

https://www.rsracing.com/tech-wheel.html