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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » Archive through May 15, 2015 » PR4's not as "capable" as the PR3's . . . « Previous Next »

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Pnw_uly
Posted on Wednesday, May 13, 2015 - 11:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Totally unscientific theory, of course...

So I averaged about 18,000 miles on two sets of the Michelin PR3's and they were by far the best wet tire I've had on any bike.

I recently mounted the PR4's and have found in the first few hundred miles that they are less "grippy" on wet tarmac than the earlier PR3's.

So, all other things equal - - same tire pressure, load, route, and climatic range, anyone else not as impressed with the "latest and greatest" Michelins ? ? ?

Anyone else have a similar experience transitioning between these two tires ? ? ?
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Ratbuell
Posted on Thursday, May 14, 2015 - 11:25 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

The PR4 is designed through use of a silicone compound, to give a racers "scrub" feel in the turns while offering the same levels of grip and treadlife.
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Arcticktm
Posted on Thursday, May 14, 2015 - 12:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Is a "scrub" feel a way of saying it is supposed to feel like it is slipping?
Doesn't sound like an upgrade for me, since I am not a club racer on my Uly.

I have run PR2 & 3 but no 4 yet.
Are you really saying you got 18k miles out of each set of tires??? Or was that for 2 sets? either way that would be awesome. I can't get more than 5k mi from a rear.
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Pnw_uly
Posted on Thursday, May 14, 2015 - 06:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Not a racer, but have done a few track days with the Uly when the CR was out of sorts..., but initial comments were based on commuting, not track performance. They just don't seem as good when wet...at least to me; that's why I queried if anyone else might have had a similar perception.

Jim - Yep, 19,5XX on the first pair, 16,XXX on the second. Only reason I swapped out the second set is the plug I put in at 3K was losing air (1-2 lbs. per day) and I got tired of pumping the damn tire up every few mornings... Could have eeked a few more miles out of each front tires, but hard to complain with that performance...

Anyone else ?
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Smac
Posted on Friday, May 15, 2015 - 10:30 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I can't speak for the PR4's but I can say I started with the PR2's with high confidence/tire life & then moved onto the PR3's. I didn't think the PR3's handled as well as the PR2's but tire life was just as good. With that said, I did not plan on buying the PR4's...I hand plans to re-buy the PR2's but I couldn't pass up the deal I found on the Battlax T30's...had to give them a try! More than likely, my next purchase will be another set of PR2's (assuming they will still be available).
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Hughlysses
Posted on Friday, May 15, 2015 - 10:42 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

PR2's and PR3's were supposedly identical in construction and rubber compounds except for the additional "sypes" added to the tread to help channel water away to improve wet traction. I have no idea about the PR4's.

I've been happy with several sets of PR3's, but I'm ready to try something else for my next set of tires.
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Tootal
Posted on Friday, May 15, 2015 - 12:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Just bought a set of PR4s. Haven't mounted them yet but plan on the front this weekend I hope. Got to sneek it in between building a race motor and brewing beer!
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Buewulf
Posted on Friday, May 15, 2015 - 01:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

19K miles on a single rear tire??? I don't even see how that is possible. Good on you. What's the secret?
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Hughlysses
Posted on Friday, May 15, 2015 - 02:00 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What's the secret?

You replace the drive belt with a rubber band and you CAN'T break it.

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Pnw_uly
Posted on Friday, May 15, 2015 - 03:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

19K miles on a single rear tire???

Here's the post from late 2013. . . http://www.badweatherbikers.com/buell/messages/142 838/725928.html?1395524157\

A whole lot of wet miles on concrete (instead of asphalt) most likely aided tire life... Not a light-weight, not too easy on the throttle, tire pressure in the 36-38 lbs. range, etc.

Not bashing the Michelin PR4s, still a very, very good tire, had just been wondering if anyone else had a similar read on the wet traction abilities... Perhaps it was the shift in construction methods/components as Joe commented.

Thanks for the input and ride safe.
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