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Discussion Starter #1
Hey guys,

Im looking into new tires for the summer. I've been debating between staying with 26s or jumping to 27s. Some of my friends are saying ill loose too much power with 27s. Do some of you guys have any feedback?

Thanks!


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The 1" isnt much of a deal. Its the tires you will be considering and the weight difference from what you have.if there alot heavier you will notice it.
 

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Go with the 27 inchers and a clutch kit.
 

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^ this
 

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I`ve run 26`s and 27`s on my XP and the power difference wasn`t that bad but it did throw my speedo off which annoyed me.
 

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I just installed a set of Pitbull Growler Uber XORs in 26x9x14 front and 26x11x14 rear. They measure just over 27" installed, they are super aggressive and are 36lbs heavier (all four) than the stock PXT's. So far, what I have noticed is that the traction is phenominal! Yet I can still slide the machine in gravel, but they come back on line a lot faster. Powerwise, I think I have lost some, but, I really have not noticed any big change.... Since my Brother has a 2013 550XP and we have raced a few times, the next time we get together will be the real litmus test as we will be able to compare again. However, he is running stock AT489II's... So it will be intersting, because we will be installing my old PXT radials on his machine. After I have done some side by side comparisons and put a little more mileage I will be posting a review... But for now, I am extremely happy.
And honestly not too worried if I have lost a little power, just means I may have to run it in low range a little more... As far as top speed, since I am just a recreational user, it really has no bearing to me. What I tell people is to judge by how you ride, not how somebody else does. To a racer, probably not a good idea, to the average recreational user, a slight decrease won't really be noticeable... At least that has been my experience.
 

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And honestly not too worried if I have lost a little power, just means I may have to run it in low range a little more... As far as top speed, since I am just a recreational user, it really has no bearing to me. What I tell people is to judge by how you ride, not how somebody else does. To a racer, probably not a good idea, to the average recreational user, a slight decrease won't really be noticeable... At least that has been my experience.
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Exactly this!! When upgrading tires I think you have to decide if you want to:

1: go up in size and lose a little power, use low more frequently

2: stay at size and have almost the same power (nearly all aftermarket tires are heavier to some degree)

3: go big or go home...go up in size and re-clutch so you have your machine running at optimal performance
 

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WHS, thanks for taking the time to post your initial thoughts on the Pit Bull Growler Uber XOR tires. I agree these tires give exceptional traction. They are also extremely durable.
I was checking into these tires and was wondering what is the lug depth and is there any other differences between the 6 ply and 8 ply Growlers? And where are the Growler bg 2.5`s imported from?
 

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Here is what I know Rubicon, I just went and double checked and measure just 26.5" mounted with 5psi air, lug depth is right at 1". And yes, there are differences between the 6ply and the Uber 8ply. I ran a set of 25.5's on my 2010 and they were almost identical to stock size (both H & W), 6ply and weighed in about 30lbs more for all four than the stock Terriblethons. The 6ply Growlers were made in the USA. These new Ubers are 8ply and weigh in 36lbs heavier than the stock PXT's. And they are very stiff, with great sidewall and rim protection, and definitely not something you are going to want to change at home.... They are stiff. The new Ubers are made in PRC, aka China.
As I said, I will be testing them pretty thoroughly over the next few months and will really be putting them to the test in June when I spend a week at Morrow County ORV and head out into Sunflower for some all day adventure rides.
Now I will say this, I have compared the Growlers to Bighorns and here are some my findings.
The Bighorn is better in the deep snow, because you can literally run them at 0psi and they have good sidewall flex, however that is the only place that the BH outperformed the PB's.
I have a couple of friends who run tricked out 700's (exhaust, tuners, clutch kits, etc...) and on my stock 10' 550XP with 6ply Growlers they could never lose me and when we did side by side comparisons, the Growlers outperformed the BH's. In one area we found a nice little sippy hole... It was a ditch that had filled with nice soupy mud, aprox 5' wide, 2.5' deep and about 25 yards long. The Grizzly's with their BH had to roll through in 4WD, I made it in 2WD and got a lot of raised eyebrows as a result. In some haul ass testing, where they were sliding around at high speed running on hardpack, I zipped right through and I honestly feel it was the grip and handling that allowed my lesser powered machine to keep up, because these guys are definitely better riders than me. One guy actually flipped his machine as it caught a rut under a large puddle, I went through the same hole at 40mph and felt only a slight jiggle. In the end, one of the guys was going to get a set of Growlers for regular use and save his BH's for the snow.
 

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Oh, one other quick story... Another guy I ride with has a nice Grizzly 700 and he actually changed the gearing on it so it would crawl slower downhill. We both climbed to the top of a pretty steep hillside and then lined em' up facing downhill. I was in Low range with ADC on... We then just let them roll down the hill. He was pissed! It was about 75' down and I was fully 20' behind him when we got to the bottom. It was great.
 

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Discussion Starter #12
Thanks for all the reply guys! I think i'll try out the 27s...haven't decided on the tire itself but im glad to hear its not a huge power loss. Im not a racer, i prefer mud so traction is key!


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WHS, thanks for the additional information on the Pit Bull Growler BG2.5 XOR tires.

Here is a link to the tread depth from Pit Bull's web page. The ATV/UTV tires are at the bottom:

http://www.pitbulltires.com/downloads/PITBULL_ATVUTV_SPEC_FINAL.pdf

The Growler BG2.5 XOR tires have the same tread depth as the 6ply rated 25.5 Growler XOR.

Let us know if we can be of further assistance.
 

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Clutch1, what would you like to know? I can tell you, Waitsburg is 20 miles East of Walla Walla in the foothills of the Blue Mountains, a small town of 1200 people and the last remaining town in the country that is still governed by it's original charter.
 
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