Question - 2.2 Tire Size

[JeremyH]

Can a wheel/tire combo that uses a larger than 2.2 OD rim but a tire with a small sidewall which results in an overall OD the same as a 2.2 M2K be run legally in a competition?

Thanks!

[RXcrawler]

Nope the wheel has to be a 2.2 wheel.

[JeremyH]

Hummm....that is strange. I would think that the overall OD would matter more than the OD of the rim. Correct?

[TURTLE]

Originally Posted by RXcrawler

Nope the wheel has to be a 2.2 wheel.

Or smaller

[TURTLE]

Originally Posted by JeremyH

Hummm....that is strange. I would think that the overall OD would matter more than the OD of the rim. Correct?

nope!
Just not how the rules were written but you can always make them a 2.2.
MODIFY!

[JeremyH]

Yeah, I read the rules.

Most 1:1 comps use the OD of the tire as the limiting factor...not the rim.

[Kamikaze]

I already pissed and moaned about this awhile back.
2.2 Rim discusion

Seemes to many people like things the way they are.

[JeremyH]

That was a good read. I am not sure why folks like the tire size. Maybe instead of a rim size class, there should be a range of overall diameters (to include the rim and tire).

[theshimonator]

I think personally they should be regulated in wheel hex size rather than wheel size.

[Reflection]

Originally Posted by theshimonator

I think personally they should be regulated in wheel hex size rather than wheel size.

What would the 2.2 class hex size be then? 12mm I'd guess. What if my axles have a 17mm hex and I want to run them in 2.2? What if I built a custom set of wheels and hexes and I've got 21.7mm hexes? Can I build a set of hexagon wheels and just run a 2.2" hex? O'Yeah,I'm gonna build a 2.2" hex beadlock wheel. So much for stripping hexes.

That'll never work.

IMHO,I like the idea of looking at the wheel size AND OD of the tire. I'd like to see 5" or so max and 2.2 wheel for the 2.2 class. For supers,like it is already.....run what you brung. I'd like to see a 14r class,limit it to maxx size wheels and 6" tires.

[JeremyH]

Originally Posted by raptorman57

I'd like to see a 14r class,limit it to maxx size wheels and 6" tires.

Maybe that would be more acceptable to others. Good idea!

[Unholy]

The rules for 2.2 already have a max tire size of 6 inches.

[JeremyH]

Originally Posted by Unholy

The rules for 2.2 already have a max tire size of 6 inches.

Huh?? The most recent set of rules I find in this section (titled 2006) say nothing about tire OD in the 2.2 class section. Did I miss a newer version?

[Unholy]

Originally Posted by JeremyH

Huh?? The most recent set of rules I find in this section (titled 2006) say nothing about tire OD in the 2.2 class section. Did I miss a newer version?

It's 2007... http://www.usrcca.com/rules2007.pdf

[JeremyH]

Ahh.....I had not seen those.

It still seems logical to me that the tire size should be limited to OD of tire/rim combo....and not have anything to do with the rim...like it is in 1:1 crawling comps.

[Unholy]

Originally Posted by JeremyH

Ahh.....I had not seen those.

It still seems logical to me that the tire size should be limited to OD of tire/rim combo....and not have anything to do with the rim...like it is in 1:1 crawling comps.

Well, all I can give you for an answer is: It's called 2.2 Class.

[JeremyH]

Yes, I can read the name...

Why is it different from the other class? Why is it different than all of the classes listed in 1:1 rock crawling? None of these list the class by rim size.

[Reflection]

Originally Posted by Unholy

The rules for 2.2 already have a max tire size of 6 inches.

I'd like to see the tire O.D. be down sized to 5" or so.

Originally Posted by JeremyH

Why is it different from the other class?

Because it's a different class

Other than having a different name,reading the regulations for the rig specs.....It's quite simple to see why it's different.

Originally Posted by JeremyH

Why is it different than all of the classes listed in 1:1 rock crawling? None of these list the class by rim size.

This isn't 1:1 crawling. It started out as 2.2 class and will always be 2.2 class.

[JeremyH]

Yeah, I know why the class is different in regard to vehicle specs....I was referring to why the naming scheme (and therefore, the limitation of rim size) is different for this class.

[Reflection]

Originally Posted by JeremyH

Yeah, I know why the class is different in regard to vehicle specs....I was referring to why the naming scheme (and therefore, the limitation of rim size) is different for this class.

Thats kinda like asking why the sky is blue. It just is,has and always will be.