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Need to change tires on my BMW R90/6
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Dr. Raoul Duke
Posted 8/10/2005 10:46 AM (#9169)
Subject: Need to change tires on my BMW R90/6


Just changing on the BMW only. Stock rim. Any suggestions. More interested in handling then tire life. Kind of scared off those special sidecar tires because they are so old and have to be prone to rubber rot even before I would put them on?

Ideas, thughts, criticisms?

Dr. Raoul Duke
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Bob in Wis
Posted 8/10/2005 11:11 AM (#9170 - in reply to #9169)
Subject: RE: Need to change tires on my BMW R90/6


the 'special sidecar tires' are NOT old ...they are fresh from the factories, same as regular tires , unless you get them from an old dealer who had them stored away in the attic somewhere.
Get Metzler block 'K', or Avon MK II flat tread tires...more rubber to the road.

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claude #3563
Posted 8/10/2005 1:46 PM (#9173 - in reply to #9170)
Subject: RE: Need to change tires on my BMW R90/6



Expert

Posts: 2480
2000100100100100252525
Location: Middleburg, Pa
Bob is right the Avon Triple Duty (19") and the Metzler Block 'K' (18") are typically not 'old' tires. There is a stamp on the side of all tires that indicated the month and year they were made in. It is sort of an oval shape with the numbers in it and willl look different than the other leters and numbers on the tire.
If you decide to go with motorcycle tires many , including myself, have has good results with Dunlop K491s.
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sidebuggy
Posted 8/11/2005 8:06 PM (#9204 - in reply to #9169)
Subject: RE: Need to change tires on my BMW R90/6


Dr. Duke....

I've tried many of the motorcycle tires and the only one I could get decent wear out of was Michelin on the R90/6/Ural and got 4300 miles out of that tire. I finally went to an Avon sidecar square tire and have been told that I should get 4-4500 miles out of it.

I put on a "long mileage" Metzler for a trip to Colorado and on the way back, I had to stop in Fort Worth to replace the tire at 2300 miles.

Your mileage with depend on your setup. I've gotten less than 1K with the rig needing correct toe-in and bike lean.

If you want more handling, call Perry in Fort Worth and ask him about re-spoking your wheels so you can use auto tires.

budamy
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claude #3563
Posted 8/11/2005 8:33 PM (#9206 - in reply to #9204)
Subject: RE: Need to change tires on my BMW R90/6



Expert

Posts: 2480
2000100100100100252525
Location: Middleburg, Pa
>>I've tried many of the motorcycle tires and the only one I could get decent wear out of was Michelin on the R90/6/Ural and got 4300 miles out of that tire. I finally went to an Avon sidecar square tire and have been told that I should get 4-4500 miles out of it. <<

With the Dunlop 491 on the rear I have gotten close to 10,000 miles. I say close because it probably should have been changed at about 8. This was on an XS11 Yamaha with a Motorvation Formula II sidecar. Keep in mind this is a very wide rig which would typically be a bad thing as far as tire milage goes. Also, with same brand tire I have had to replace it at around 4000 or so due to too much hotrodding.
I do concur about a bad setup killing tires. I had run one almost down to the air years ago in less than 1000 miles.
Too much toe in is the #1 killer of tires from my experience.
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Bob in Wis
Posted 8/11/2005 8:35 PM (#9207 - in reply to #9169)
Subject: RE: Need to change tires on my BMW R90/6


I've gotten between 7000 and 8000 miles on my last 2 rear tires..1st was an Avon MKII, and the second, on the bike now with 7000...is a metzler Block K.
Bob in Wis.
R75/5 wR100RS engine/ terraplane
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claude #3563
Posted 8/11/2005 8:44 PM (#9209 - in reply to #9206)
Subject: RE: Need to change tires on my BMW R90/6



Expert

Posts: 2480
2000100100100100252525
Location: Middleburg, Pa
Speaking of car tire wheel conversions it may be worthwhile to check out if you plan to keep the rig for a long time. Harry Tarzian of HT Wheels here in central Pa has done a fair amount of them with good feedback on tire life. You can call him at the number below and may be surprised at some of the results by doing the swap.
(814) 349-2414
Keep in mind that a 165R15 can be purchased at typically around a third of the cost of a 491 Dunlop depending upon where you get it. The last one we bought was a whopping 38 bucks for sale at Pep Boys. There was one guy who had put 18,000 on one of these and it still had plently of life left on it. So , if the bike is to be kept for a while and the math is done the cost of the conversion may be worth it. Even if the math doesn't work out they do look kinda neat.

Edited by claude #3563 8/11/2005 8:45 PM
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SidehackRalf
Posted 8/15/2005 11:06 PM (#9304 - in reply to #9169)
Subject: RE: Need to change tires on my BMW R90/6


Veteran

Posts: 128
10025
Location: Libby, Montana
As a matter of interest, I just changed my rear tire today. I got
a little over 8,000 miles on a Elite 3. Some of that was on two wheels
{maybe a thousand miles}. I replaced it with the same brand. It was
wearing more off the right side than the left. If it hadn't been for
that I probably could have gotten a few more miles out of it. The rig
tracks beautifully. I use a steering stabilizer most of the time.
However, it quits shaking its head at about 20 mph and it is not
severe at that.
Cheers,
Ralf
Honda GL1500
Champion Escort
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