Arctic Cat's website says my AC 375 has Front 25x8-12 and Rear 25x10-12. When shopping for new tires, I really don't know what those figures mean. I see several of you have 27" 589's and I'm wondering if you had to buy new wheels or did they fit on your stock wheels.

I've been looking at the 589's as an upgrade. It is my understanding that they are the lightest tire of their type when compared to Vampires, outlaws, mudbogs, etc... Am I accurate in this?

I'm thinking about changing the rear wheels to something different. The stock Dunlop XT's don't seems as agressive as the 489's and the lugs dont seem as deep. Is there a reason that AC switched to the dunlops on the rear over the 489's? Am I off here?

I guess if I changed the rears to a larger tire, it would look funny if I didn't do the same to the front. I like the idea of raising the Cat if the wheels don't cause a problem. This is just an idea that I'm kicking around, but I would like to understand the wheel sizing. To you guys with the larger wheels. What does it do for the off-camber situations on the side of a hill? Does the higher center of gravity hinder you or does the wider stance offset the higher center of gravity?

So, what does each number represent on the wheel size. For example: Front 25x8-12.


Thanks for your help!

EtherNut

 

Ethernut:

I don't consider myself a tire expert, but here goes. . .

The tire sizes represent tire diameter (in.) x treadwith (in.) - wheel diameter (in.).

If you change tire sizes on the rear, you would want to change to the same size on the front. Otherwise the driveshafts would be fighting each other with different drive ratios when in 4wd.

I don't know why AC changed to the Dunlops, the 489's are a good tire.

I think Mudbugs are lighter than 589's, but not by alot.

Larger tires fit on stock AC rims without problems from everything I've heard.

Hope this helps.

 

Hey dudes, Tcat is dead on , My dealer going to put the 589s strait on my stock rims . that saves 300 bucks , I like that alot good luck dude

 

The tires will fit on the stock rims fine. But you need to put spacers on your 02 if you go with a wider tire in the rear. You dont notice until you flex the rear end and the top of the tire will rub on the shock. My dealer had some 25" 589s I think they were 25x10x12 on a 375 demo with no spacers and they didn't rub. But my 27x11x12 did until I put the spacers on. I think you can do the same with aftermarket wheels of a 5-2 off set also and stay away from the spacers. I haven't had any trouble out of mine but I have heard of people breaking the graphite ones. I have the 1.5" durablue graphite ones from Highlifter I think about $90.00 with shipping.
The ITP 598s are a good long wearing tire but I think they are heavier than the mudbug. I have 1300 miles on mine now with very little wear, I do some road riding to the neighbors and such. I don't know about the new 589s I think MT.

 

Hey dude , Mudcat Thanks dude about the wear and ride info on the 589s , Im getting itps 589 ms , 2002 400i&500i have 25x11x12 on the rear and the quad is wider the the act rear end , not to say it wont rub but it shouldnt but if it dose i know now where to get the spacers anyway thanks dude

 

If you get a chance check out the Goodyear Mudrunners. I had them on my last machine and I liked them over the 589's I have now. The mudrunners were lighter and provided a better ride on hardpack. They are a little more money, but well worth it. I ordered the mudrunners from www.treaddepot.com and they were $311.00 shipped to Utah and it cost me $6.00 a tire to have em mounted at a local shop. I bought my 589's from Rockymountain atv's showroom and they cost me close to $300.00 by the time they mounted them. In case you haven't noticed, I regret getting the 589's. They might be good for some, but not for my needs. I ride in a lot of rocks, ruts, snow, and a little mud.