Ok

I was just curious. I Have 16.5-15 Extremes on my car... Allot of guys say they have 33s or 35s..No big deal just thought for years that was the metric conversion. No big deal.

So I called Extreme today. Asked How the number works.. They had no IDEA!!!???.. I was like WHAT??. I understand the 15 for 15 inch rim.

I then asked what the 16.5 is for. They said its the Width. I was like WHAT???!!?!!!!

I hope I just got an Idiot on the line.

Maybe its just me. Great number system you have. I said and hung up.

Anyone shed some light on this? How tall are they??

the 16.5 is the width , the 15 is the rim size . they used to show the sizes on their site , but i noticed last week they changed the site and it no longer shows sizes . tim

Mine are only like 30" with 6psi... xtreme eliminator 16.50 x 15
mike

Supposed to be 31.5" tall from what I remember. 16.50" width, 15" rim application

dune sports are called 14.50 or 16.50. everyone has their own way

ok 1 hr on phone with Mark from STU...Haha Should run for President of the United States!!!LOL

The 15.5 or 16.5 means nothing as far as size! its like a BS number they came up with and then Extreme just calls out a number a little bigger so it looks better to sell them on the market.

Now STU measures the Carcus to give you the height and Extreme measures the paddles. Stu makes sense because your paddles are in the sand. ok I got that.

So sandblaster 33 is 33 on the carcus.

Just to let all of you know. I even asked a simple question to STU. I asked 4 times. I even marked it down every time I asked it.

Q: If you wanted more traction lets say at the drags. would you air up or down...
A:I could not get a straight answer out of him.

Q: If you wanted more traction lets say in a race in a flat area would you air up or down .....
A:no straight answer.

Q: If you wanted more traction lets say for no reason would you air up or down....
A: I would get a different tire.

Q: No place to get tires.They no longer have tires. and the world has come to the end You were in the middle of no were. You had to get more traction. So now what?...
A: Depends what sand your in .. Dumont, Glamis. hmm

My Head hurts now. I think Ill buy new front tires next year. Just go park next to someone and say ok those are about right. Order that number on the side because it has nothing to do with the tire height.

No Wonder Legit cant get his Gearing correct what size are your tires for real...LOL

dont even worry about it. youll have a sxs by then LOL

haha ...Trader..LOL

What's with the deceptive titles to so many threads.

Thought someone was going to be braggin about something, not related to a tire.....

Sorry to Ruin your day

The tire sizing is confusing. I have asked people over and over again on what size there tire is and they don't know. The simple answer from people I talked with was they either came on the car and I replaced with the exact same or My buddy runs this tire so I chose it. Seems as if there is no accurate measurement to these tires.

Here you go.
The numbers after XT indicate the width of the Tread/paddle. Measurements are really close, but not perfect.

Buggy Series
XT1300X 15 Carcass 29" Inflated 31"

Hole Shot Series
XT1350HS X 15 Carcass 31 inflated 33"
XT1450 X 15 Carcass 31" inflated 33"
XT1650 X 15 Carcas 31.5" inflated 34"

Revolution Series
XT1400 Revolution X 15 Carcass 33 inflated 36"
XT1400 Revolution X 17 Carcass 33" inflated 36"
XT1600 Revolution X 15 carcass 33" inflated 36"
XT1600 Revolution X 17 carcass 33.5" inflated 36.5"

Dominator Series
XT1650 DOMINATORS X 17 Carcass 35" inflated 38"


Hope this helps.

The best way to get the right size tire for your car is to get the specs from your engine builder (hp and torque) take these specs along with the Cars weight to your Tranny Builder, when he's building your tranny, and he should recommend the right tire size based on all this information and the calculations he uses to put the gears in the tranny.

Anthony

Finding the overall height of these tires depends on too many variables. Wheel width and inflation pressure affect the overall height of the tire. When I first got my buggy, it came with desert traks mounted to it, and the paddles I threw in the back of my truck. At the time, I didn't notice anything since they were inflated, but when I went to pack up for my first trip in it, I noticed one of the paddles was considerably wider and shorter than the other one. I thought I had missed something obvious and got ripped off until I noticed it was flat. Pumped it back up, and it was identical to the other.

A set inflation pressure is hard to figure out as well, but from what I've seen, less air means more traction and less ability to rotate from a handling balance standpoint. Since I've got a bus trans, turbo Nissan motor, and I mainly run in the dunes, I run higher pressure than most for a similarly-sized buggy (13-16psi, 1300lb 2-seat beam car) to get some more spin and to help it rotate.

BTW, not sure if more traction necessarily means a better hole shot, just less wheelspin. Sand displacement is also important for forward momentum.

So, it depends...

Ask LEGIT how that worked out for him. I would not trust a builder,tranny guy, or engine guy. for sure. My problem was I wanted to replace them with some other brand and looking for the comparable size.

Sorry Legit had a bad experience.

When built my car. I asked the builder (Paul Johnson over at Scorpion) which tires to run. He suggested the 13.50 Xtreme's #2 cut. I took this information over to Dave Mcdowell of Mcdowell Performance. He ran the numbers based on my (at the time) 2.0 Liter Subuaru (steve Johnson built), Mendeola E Box Gears and said the 13.50 would great. He did however recommend that I get the XT 14.50's if I ever planned on upgrading to the 2.5 Turbo. Well as luck would have it. I upgraded to the 2.5 and found the 13.50's were giving me too much wheel spin. So this seaon I am upgrading to the 14.50's.

That is how my story goes.

AW

For your car?! Just get the STU 33 blaster # 1 cut! ( thats the smaller of the 2 cuts )