Category Archives: Wheels and Tires

Newb Spacer advice needed

Have a 2013 800 eps

For rims considering:
Motorsport Alloy M20 / Kore 14×7 3.5+3.5 offset

For Tires
Bighorn 26×11 (rear)

or Kenda Bear claw HTR 26×11

Would I need spacers for the rear motor motor mount?

the other rims i am going to look at are the ITP SS212 14×8 in the rear but dont know the offset.

Another mud / trail tire question

Guys, I currently have my factory big horns that are 26’s and I also have a set of 29.5 terms. I am tired of switching them out and now that i have the Outkast lift on I think a set of 26’s will more than likely look funny. I really want a good all around tire, but runs good in the mud since most of what I do is mud.
I am really looking at the intimidators, I know several folks with this tire, but they are running them on 1000 4 seaters and 36" tires at that.
I am torn between the 30’s and 32’s, there is a 6lb difference between the 2 sizes at 52 & 58lbs. I am wondering will that 6 lbs make a huge difference as far as the life of my front diff and other parts.
I am also wondering if there is another 32" tire that compares to the intimidator but may be lighter.

I am running a 2013 800s with an Outkast lift, I do have all aftermarket axles, and I have stock clutching which runs fine with my terms now. I don’t run fast and rarely get out of low gear.

12″ wheel, max tire height

Starting to look for some new tires to replace the stock 26" big horns and wondering how tall of a tire do they make for the stock 12" wheels?
I’m getting a new primary and clutch kit right now and would like to get something 27, 28 tall but searching rmatv it wouldn’t bring up anything taller then the factory 26s and wasn’t sure if it was the info I entered to search or that’s the max on stock wheels.
Looking towards the rip saws or possibly big horns again. Don’t need a dot or strict mud tire, it’ll mostly see the woods, rocks, back roads, snow and a small amount of dirt track. I’m set on sticking with the stock wheels for now too, I’ve got a few other things I need to do to it before winter.

12″ wheel, max tire height

Starting to look for some new tires to replace the stock 26" big horns and wondering how tall of a tire do they make for the stock 12" wheels?
I’m getting a new primary and clutch kit right now and would like to get something 27, 28 tall but searching rmatv it wouldn’t bring up anything taller then the factory 26s and wasn’t sure if it was the info I entered to search or that’s the max on stock wheels.
Looking towards the rip saws or possibly big horns again. Don’t need a dot or strict mud tire, it’ll mostly see the woods, rocks, back roads, snow and a small amount of dirt track. I’m set on sticking with the stock wheels for now too, I’ve got a few other things I need to do to it before winter.

Going to Baja on GMZ tires.

I’ve been doing a bunch of tire research as I’m doing another Baja trip. There are allot of new tires out there and several are really good. But what I need is a full all terrain tire. In Baja we will be on every type of surface you can think of. Graded road, dirt trails, rock, sand wash, silt, beach sand and we will even be driving down the asphalt highway. While tire wear is important, too hard of a compound or stiff tire, will not perform as well in the soft stuff. Too soft and we will wear them out in 500 miles and tear them up on the rocks. A square edge tread can have to much bite and can rut track, especially in a lighter vehicle like a UTV. This is why you see rounded tread pattern tires used on lighter buggy race cars. We also looked at a steel belted tire, but I just dont think such a stiff and heavy tire is worth the trade off. If I wanted that weight I would rather put that weight in a taller tire, then a smaller heavier tire.

So I looked at the GMZ Race Products tires. GMZ does not have the marketing or web presents that some other tire brands do. They seem to be under the radar in many ways. But after speaking directly with one owner of GMZ, I felt they had the best tire for what we were doing. Try calling some of the other popular brands and see how far you get. Ask for engineering or tech? I did and got nowhere!

GMZ is 3 partners and all three have not only a racing background, but they have all worked in the tire & wheel industry before starting GMZ. GMZ actually designs their own tires & wheels. Many of the other brands contract out to have their tires designed and manufactured by someone else. Part of GMZ is overseas and is in the factory’s that they have contracted to manufacture their tires.

GMZ has the Cutthroat tire which is a 28X10-14 inch tire. And they have the Kahuna tire which is offered in a 30X10-14 and now a 15". For our application (XP4 900’s) we felt the 30inch Kahuna was to much tire, as we have stock clutching & axles. Plus I can relate to the tread of the Cutthroat, as it is very much like the Yokohama Super Digger 3, which is the most winning #1 limited buggy tire in Baja. The Yokohama is also a nylon corded radial tire, not steel belted to keep it light & pliable.

Yokohama Super Digger 3 (Rounded tread)

GMZ Cutthroat 28×10-14
Specs: 6 ply radial, D.O.T approved, weight 31 lbs.

GMZ Kahuna 30X10-14
Specs: 8 ply radial, D.O.T approved, weight 33 lbs.

The Cutthroat measured right at 28 inches mounted with 10lbs of air in the tire.

So for this trip we bought 10 GMZ Cutthroat tires. I weighed 4 of the 10 on a digital warehouse scale and all 4 weighed between 30.7 & 31.1 lbs. (Sorry no pictures.) This Baja trip is going to be in the 500+ mile range and we will be able to see real results and not just opinion about the GMZ Cutthroat. I expect to see tire wear. If I did not I would say we are on way to hard of a tire compound. I want 50K mileage out of my truck tires, but not my recreational or race vehicle tires. We would kill a set of Yokohama race tires on the race car in 500 miles. I expect the GMZ to wear better as they seem to have a bit harder compound, and we will not be running race speed all day over all the terrain we will face.

When we get back I will share our trip and post results of the GMZ Cutthroat tire. I will either have great things to say, or I will be telling you about the wrong tire for our trip.

BTW; the most winning UTV tire in Baja & BITD right now is the ITP Ultracross R. BFG just released what is expected to be the next King of UTV tires in Baja the KR2. What do these two tires (which were produced after the GMZ Cutthroat) have in common with the GMZ Cutthroat? Both are nylon cord radials and are designed with a rounded edge tread. But neither are DOT approved like the GMZ Cutthroat.

BFG builds the most winning tires in Baja period, and all have been steel belted until they built this new KR2 30" UTV & 35" class 10 tire.Why? Because they understand a lighter tire is needed for limited power vehicles. General Tire builds the Grabbler Red Label off-road tire, which they too built with Nylon cord and not steel belts and is very popular with the truck & high HP buggy classes. Just something to think about!

http://gmzraceproducts.com

Going to Baja on GMZ tires.

I’ve been doing a bunch of tire research as I’m doing another Baja trip. There are allot of new tires out there and several are really good. But what I need is a full all terrain tire. In Baja we will be on every type of surface you can think of. Graded road, dirt trails, rock, sand wash, silt, beach sand and we will even be driving down the asphalt highway. While tire wear is important, too hard of a compound or stiff tire, will not perform as well in the soft stuff. Too soft and we will wear them out in 500 miles and tear them up on the rocks. A square edge tread can have to much bite and can rut track, especially in a lighter vehicle like a UTV. This is why you see rounded tread pattern tires used on lighter buggy race cars. We also looked at a steel belted tire, but I just dont think such a stiff and heavy tire is worth the trade off. If I wanted that weight I would rather put that weight in a taller tire, then a smaller heavier tire.

So I looked at the GMZ Race Products tires. GMZ does not have the marketing or web presents that some other tire brands do. They seem to be under the radar in many ways. But after speaking directly with one owner of GMZ, I felt they had the best tire for what we were doing. Try calling some of the other popular brands and see how far you get. Ask for engineering or tech? I did and got nowhere!

GMZ is 3 partners and all three have not only a racing background, but they have all worked in the tire & wheel industry before starting GMZ. GMZ actually designs their own tires & wheels. Many of the other brands contract out to have their tires designed and manufactured by someone else. Part of GMZ is overseas and is in the factory’s that they have contracted to manufacture their tires.

GMZ has the Cutthroat tire which is a 28X10-14 inch tire. And they have the Kahuna tire which is offered in a 30X10-14 and now a 15". For our application (XP4 900’s) we felt the 30inch Kahuna was to much tire, as we have stock clutching & axles. Plus I can relate to the tread of the Cutthroat, as it is very much like the Yokohama Super Digger 3, which is the most winning #1 limited buggy tire in Baja. The Yokohama is also a nylon corded radial tire, not steel belted to keep it light & pliable.

Yokohama Super Digger 3 (Rounded tread)

GMZ Cutthroat 28×10-14
Specs: 6 ply radial, D.O.T approved, weight 31 lbs.

GMZ Kahuna 30X10-14
Specs: 8 ply radial, D.O.T approved, weight 33 lbs.

The Cutthroat measured right at 28 inches mounted with 10lbs of air in the tire.

So for this trip we bought 10 GMZ Cutthroat tires. I weighed 4 of the 10 on a digital warehouse scale and all 4 weighed between 30.7 & 31.1 lbs. (Sorry no pictures.) This Baja trip is going to be in the 500+ mile range and we will be able to see real results and not just opinion about the GMZ Cutthroat. I expect to see tire wear. If I did not I would say we are on way to hard of a tire compound. I want 50K mileage out of my truck tires, but not my recreational or race vehicle tires. We would kill a set of Yokohama race tires on the race car in 500 miles. I expect the GMZ to wear better as they seem to have a bit harder compound, and we will not be running race speed all day over all the terrain we will face.

When we get back I will share our trip and post results of the GMZ Cutthroat tire. I will either have great things to say, or I will be telling you about the wrong tire for our trip.

BTW; the most winning UTV tire in Baja & BITD right now is the ITP Ultracross R. BFG just released what is expected to be the next King of UTV tires in Baja the KR2. What do these two tires (which were produced after the GMZ Cutthroat) have in common with the GMZ Cutthroat? Both are nylon cord radials and are designed with a rounded edge tread. But neither are DOT approved like the GMZ Cutthroat.

BFG builds the most winning tires in Baja period, and all have been steel belted until they built this new KR2 30" UTV & 35" class 10 tire.Why? Because they understand a lighter tire is needed for limited power vehicles. General Tire builds the Grabbler Red Label off-road tire, which they too built with Nylon cord and not steel belts and is very popular with the truck & high HP buggy classes. Just something to think about!

http://gmzraceproducts.com