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"K13S "Tires Different tire-brands and suggestions

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  #1  
Old 06-30-2014, 11:27 AM
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Michelin PR4 vs. PR4 GT

Will be needing to replace my PR3 (B-spec) tires in the near future, and probably will go with the new PR4. What are folks' thoughts about PR4 vs. PR4 GT for the K1300S? Both tires have the same load rating (58W and 75W). Is the K1300S (even carrying luggage and camping gear) heavy enough to justify the GT or is the standard PR4 the way to go, and leave the PR4 GT for the porky K1600? I think the new R1200RT (which is a little heavier) is equipped with the PR4 GT.
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  #2  
Old 06-30-2014, 11:57 AM
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Re: Michelin PR4 vs. PR4 GT

I just went through that decision Mike. I also had the PR3 B spec rear.

I just purchased and spooned on a set of standard PR4s.Why did I not go with the GTs?

Upon looking at it in detail the GTs are designed for bigger heavier motorcycles like the K1600S, loaded with gear and a passenger. The 1600 is 200lbs heaver than our bike. Add an average pillion of 140lbs and the extra gear of 2 people with all of that luggage and you are looking at an extra 350-400 lbs over a K1300S with one passenger and their personal gear.

Since the standard PR4's load ratings in the BMW specified sizes meet the fully loaded capacity of our bikes already, my opinion is that the GT is overkill and extra unsprung weight.

In my opinion I would have to weigh 450lbs + to justify those tires....if that were the case I would be riding a Harley
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Old 06-30-2014, 12:24 PM
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Re: Michelin PR4 vs. PR4 GT

Mike:

This has been discussed here. http://www.i-bmw.com/showthread.php?t=49086

The regular tire is the one for the K1300S - unless you are going to be two up fully loaded.

Check post 21 - I called Michelin and posted their answer.
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Old 06-30-2014, 01:21 PM
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Re: Michelin PR4 vs. PR4 GT

Quote:
Originally Posted by brucev
Mike:

This has been discussed here. http://www.i-bmw.com/showthread.php?t=49086

The regular tire is the one for the K1300S - unless you are going to be two up fully loaded.

Check post 21 - I called Michelin and posted their answer.

Thanks. I searched, but not over in the K1200 forum. From reading that thread, it appears to reinforce my initial opinion that the PR4 Standard is the tire for me. K13Mike's post here also confirms. I have noticed that with the B-spec PR3 the bike feels a little harsh even on "Comfort" and one helmet on the ESA, so we'll see if the PR4 Standard softens it up a little.
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Old 07-01-2014, 07:56 AM
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Re: Michelin PR4 vs. PR4 GT

Review in August Cycle World gives more info than Michelin gave me on the telephone. They told me only the sidewall was different.



It did not scan great for some reason - the gest of it is the rear GT has a medium shoulder and harder center than the standard and the casing has 2AT- Dual Angle Technology that employs a combination of bias and radial construction which makes the tire 15% more rigid than the standard. The fronts are the same.
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Old 07-01-2014, 10:54 AM
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Re: Michelin PR4 vs. PR4 GT

Quote:
Originally Posted by brucev
Review in August Cycle World gives more info than Michelin gave me on the telephone. They told me only the sidewall was different.

It did not scan great for some reason - the gest of it is the rear GT has a medium shoulder and harder center than the standard and the casing has 2AT- Dual Angle Technology that employs a combination of bias and radial construction which makes the tire 15% more rigid than the standard. The fronts are the same.

I already read the Cycle World article. From the article and the Michelin web page, the PR4 Standard and the GT have the same tread compounds (hard in the middle 20%, medium on the outer 80%). The PR4 Trail has medium in the middle and soft on the sides. The GT has essentially some partial bias-ply construction that makes the tire more rigid (which I guess includes the sidewalls) than the PR4 Standard.

But, it appears to be the consensus that the PR4 GT (and its increased rigidity/stiffness) is not needed on a K1300S, and may in fact contribute to a harsher ride.
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Old 07-01-2014, 12:59 PM
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Re: Michelin PR4 vs. PR4 GT

I have a K1600 GTL and started my season with a new set of PR4GTs. They are everything I hoped for for two up loaded riding. We've carved lots of 80 mph turn/sweepers on the outside edge and felt very secure. Not much wet weather yet but I did a few miles of hail on the road last week. No fun but still stable enough to stay in the empty tracks of traffic. I like the tires and have over 4K on the set, tread still looks great and nothing weird for cupping or wear. The OEM set wore out at 6800 and showed a large silver stripe of belt. I think I'll get my hoped for 10K+. This tire in the GT form is too much for the K1300 but I'll recommend the PR4 tire.
Best, Bob
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Old 07-01-2014, 09:50 PM
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Re: Michelin PR4 vs. PR4 GT

Just did 6 000 miles on the PR4GTs. two up loaded on the K1300GT through Arkansas Georgia up the twisties to Canada and they gave the best ride, comfort, grip, handling in dry or wet of any of the PR 2'S , 3'S in the B format. Arlene noted that we went into a lean faster than any other tire and asked when she would be getting pucks for her leathers. ( I am sure we were never that close to the asphalt) but the bike leaned so much quicker and responded the best of any other tire. When these wear it will definitely be another set of PR GT 4'S
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Old 07-01-2014, 10:02 PM
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Re: Michelin PR4 vs. PR4 GT

In the middle of a cross country trip on PR4 GT's. Wow, what a great tire. Excellent wet weather performance, high speed stability and at 2800 miles in showing very little wear.

I keep thinking I am taking it easy but I keep passing bikes in the twisties

Now, to the OP, I can't see using the GT on the K1300. The standard carcass should be fine. My friends on Triumph Tigers and the like are having good luck with the regular PR4
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Old 08-10-2016, 03:16 AM
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Re: Michelin PR4 vs. PR4 GT

I cant decide
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Old 08-10-2016, 08:24 AM
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Re: Michelin PR4 vs. PR4 GT

MAX BMW just replaced my PR3's with PR4 GT's. I asked for PR4's but they ended up putting on GT's and the part guy says they never fit anything else to k1300's. I have done about 3000 miles on them now and honestly don't notice any difference in ride comfort compared to the PR3's same pressure. I am running Wilbers if that makes any difference.

Wet weather performance is amazing with PR4's BTW very confidence inspiring.

Andy
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Old 08-11-2016, 12:13 AM
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Re: Michelin PR4 vs. PR4 GT

I have a 98 K1200RS and the dealer installed the PR4 GTs even though I asked for the standard PR4s. 6000 miles later, to include a weekend at the Dragon in April, I am VERY happy with them. Had 15 hours in heavy rain thru Tenn. and NC zero probs. Tires seem to have no wear on them, think I'll get more than 12K miles on this set.....running Ohlins front and rear, 40 PSI front and 45 PSI rear.
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Old 08-13-2016, 05:10 PM
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Re: Michelin PR4 vs. PR4 GT

Quote:
Originally Posted by brucev
Review in August Cycle World gives more info than Michelin gave me on the telephone. They told me only the sidewall was different.
It did not scan great for some reason - the gest of it is the rear GT has a medium shoulder and harder center than the standard and the casing has 2AT- Dual Angle Technology that employs a combination of bias and radial construction which makes the tire 15% more rigid than the standard. The fronts are the same.

I went with the PR4GT right after the OEM wore out. It is the best mileage I have ever gotten from a tire in over 30 years of riding (much of which was a smaller, lighter bike). I think that may be because of the harder compound in the center. I had just under 8,000 miles when I had a non-reparable puncture. Even at that point, I estimated that the tire had another 2,000 miles of life left.

FWIW, one of the reasons I went with the GT is because I am heavy guy (north of 250 lbs) and often ride with loaded saddlebags and tail bag. With that weight, I figured the GT was a better call. Two dealers agreed.

k_enn
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Old 08-13-2016, 07:25 PM
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Re: Michelin PR4 vs. PR4 GT

I also have PR4GT's on my K13S. Dealer recommended them and about 3000 miles later, I couldn't be happier. No harshness at all, great handling and barely detectable wear. Don't think you can go wrong either way.

The KS is not a light motorcycle and with an average sized rider and a bit of gear, I'm sure you're well over 700 lbs.
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