Posted 8/23/2016 7:40 PM (#90462) Subject: Automotive Tire for rig
Location: Sandia Park, NM
I just purchased my sidecar rig, a 2009 BMW K1300GT with a new Hannigan, and I'd like to put an automotive tire on the rear, and a rear motorcycle tire on the front, mounted backwards. What is the best source for an automotive tire that will fit my rim?
Thanks for any help you have. Glad to be back to Sidecarist. This is my second rig, the last was a few years back.
Posted 8/26/2016 5:17 PM (#90511 - in reply to #90477) Subject: RE: Automotive Tire for rig
A Achilles 175/55-17 is about the only one that fits. I am using it on my R1150RT on the stock wheel. Tire-Easy.com They also have them on ebay and Amazon. Priced around $65. I got 11,500 miles on my first one. It is a summer tire so not a good tread pattern for snow or off road.
Posted 8/30/2016 2:24 AM (#90561 - in reply to #90462) Subject: Re: Automotive Tire for rig
Location: Tacoma, WA, USA
Your rear wheel is a 5.5x17 and the front is 3.5x17.
The rear rim is plenty wide enough to mount a 205/50-17 car tire which would give you the same ride height as stock. The problem, though, is creating enough clearance to not rub the swingarm or the muffler. If you're a clever fella, you could experiment with wheel spacers and whatnot, but then you have to be sure the caliper and rotor and ABS are all OK with the changes. Starts to get complicated. The 175/55-17 Achilles Economist mentioned by Roanoke Rider is a simple swap and requires no further fitting. I'd go with that.
For the front, again you have a nice wide rim that will take up to a 140, maybe a 150, but you still need the tire to clear the fender and forks. I'm guessing the fattest rear tire you could get away with would be a 130/70-17 which would only increase your front ride height by 1/4". A nice bias ply rear in that size is the Metzeler Lasertec . Guys also seem to get a lot of wear from the Bridgestone Battlax BT45 . I tried one on the front of my GS rig, but I go off-pavement quite a bit and the BT-45 couldn't handle it. But on pavement it was great.