these are the Copper STT Pro's right?

 

I've got the standard Cooper stt and it works well around here so far. I'm still waiting for the big snow but they tame the mean streets and allow me to play when I want to. There's a set of km2's on Craigslist if you're dying to try out some new rubber.

 

If your running 18s or less I would strongly recommend the Fierce Attitude M/Ts I had a set on my 07 F150 and got over 60k miles on them with regular normal towing. pulling lawnmower, polaris ranger, boats, etc. offroading was everything I needed. Bonus was the Fairly reasonable price on a set of 18s for my truck $1100 mounted and balanced. I want them for my jeep but i have 20s :(. Just my .02

 

Yes the new Stt pro tires are amazing way more road friendly then with better offroad to

 

I have been running the km2s on my jeep for a while now. This is my second set, with the other being under a full size dodge truck. My main complaint with the tire is snow performace. Like most mt's, they are downright dangerous on the roads. Go out through a field full of snow and they are fine, but get on the plowed roads and you better be very cautious. Also, the height issue pisses me off too. My 35's barley measured 34 when brand new, and just over 33 with the weight of the jeep on them. If you want a 35 km2, then buy the 37s. Otherwise, they have been good tires for me. Quiet. Run down the road pretty good for an mt.

 

On a side note, im going to buy a tire cutter/siper and put a bunch of sipes in these km2s. It will have to help tremendously for winter performance.

 

A local Discount Tire shop recently told me that they did some big study on siping, and were so unimpressed with the results that they actually pulled all of their machines out.

Kinda sucked, since I had just gotten two tires replaced under warranty, and wanted to get them siped to match the original three.

I'd like to find that study and see the actual results. (assuming there was a study and there wasn't some other reason for pulling the machine out of that location)

 

It's more money at the start but that's why I do .... 35" Duratracs on steel rims the last 3 winters and I really like them.... And then back to my 37" MTR's for summer

 

Hmm, I would like to see that as well. That sounds crazy.

Obviously the risk for tire chunking will be greater with siping, but the added performance has to be well worth it.

I will say I have seen some tires that were siped by those machines and I was not too overly impressed. A bunch of random slices all over in weird locations. That's why I want to buy a tire groover/siper, sit down with a 12 pack and just take my sweet ass time putting sipes exactly where I feel they should be.

 

I have one and swear by it. The problem with most ATs is that they are only sipped the first 5/32s of tread which means they are great in snow first year and terrible when they wear. I custom cut mine every year before winter with 4mm grooves and sipes depending on tire and it makes such a difference. Most people think I'm crazy... But I know you all understand.