K11 Owners Group

Sonu · Posted: Mon Jun 13, 2011 2:00 am Post subject: PR3's on STOCK LT rims

Guys,

I ordered a set of PR3's from Motorcycle Superstore & they showed up in 3 days Smile

110/80ZR-18 for the front
150/70ZR-17 for the rear

These fit on the stock LT rims Very Happy

Thanks to Bill a.k.a. "whyoldbill" and Jeff a.k.a. "old guy old bike" for the early trials with this tire size on the rear.

This was the first time that I took the wheels on & off myself and had a motorcycle tire shop do the mount/balancing.

Instructions in the owners manual for changing wheels are good. Couple of tips......
1) Put a 1/2" board under the center stand & the rear wheel will come off without having to remove mud guard.
2) Once the rear wheel is back on have a helper apply weight on the rear seat to tip the bike backwards & take the weight of the front wheel. Then install a wooden block below the engine to support the bike. At this point both the wheels will be off the ground & you can remove the front easily.

_________________
1997 K1100LT "Ziggy" _GarminGPS_Corbin saddle_K Guards _Hyperlights_Fog lights_Eastern Beaver Relays_Cee Bailey_4"speakers_Michelin PR4's_MoS2_Spiegler lines_TPMS_VDO

old guy old bike · Posted: Mon Jun 13, 2011 11:51 am Post subject:

Please keep us posted on the PR3's.
_________________
1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods

Scott_Anderson · Posted: Mon Jun 13, 2011 9:59 pm Post subject:

I put those same sizes on my '95LT this year in the PR2 line. Needed them before the PR3's were available.
_________________
Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

E T · Posted: Tue Jun 14, 2011 5:16 am Post subject:

Just put the same size on my LT stock rims, but they are Pr2's, Instead of using all those blocks, I just use a 2x4 on top of my floor jack, jack it up and it will hold the front end up while both are off, and you can raise and lower to what you need.

I always remove my rims myself, While you were in there, did you check your brake pads? That is the perfect time to check it out and replace them if necessary. Checked mine while i had the rims off and the rear was almost gone, so changed it, fronts were about 45 to 50 percent so will keep a eye on them..
_________________
1993 K1100LT
2005 Honda VTX 1300c---Passed

Sonu · Posted: Tue Jun 14, 2011 1:47 pm Post subject:

Flying Duck · Posted: Tue Jun 14, 2011 1:52 pm Post subject:

I'd just use bearing or lithium grease. It's only for sliding it in and out. The wheel turns on it's bearings, not the axle.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

mnb · Posted: Tue Jun 14, 2011 6:54 pm Post subject:

So a 150 isn't too wide?

It's 7mm shorter (14mm if measured from ground to top of tire), so it will lower your top speed a little. Should make it easier to wheelie... Laughing

_________________
M N B
1997 BMW K1100LT ABS Special Edition
2003 Husqvarna TE610e
2007 Harley Davidson Road King
2009 BMW F800GS
2011 Husqvarna TE310
2014 Ducati Multistrada Pikes Peak MNB Edition

E T · Posted: Wed Jun 15, 2011 2:33 am Post subject:

E T · Posted: Wed Jun 15, 2011 2:36 am Post subject:

mtnroads · Posted: Wed Jun 15, 2011 10:00 pm Post subject:

I have some concerns about that setup, having considered it myself for my LT. With a 150 tire, you are using a 6" wide tire on a 3" wide rim and that is probably exceeding a design spec somewhere. First, you are curling a 150mm tire more than intended to get on that narrow rim, leading to a narrower contact patch. This could increase braking distance and tire wear. Secondly, radials prefer wider rims, and you are putting them on narrow ones, which may result in instability, since you have mucked with the intended tire profile.

I realize it's only a 10mm diff, but I don't think the original rim/tire combo was optimum to begin with, and they were using bias tires, not radials. Will it fit - sure, tires are flexible. Is it optimum? In my opinion it can't be. I think a better bet is staying with bias ply in a 140/70-17 since they are still available. Just my opinion, as mentioned I went through the same thought process/temptation when looking at tires for my LT and decided it would be better to locate a 4.5" rear rim, which is what I did. Big improvement over stock.

Be curious to know how it works for you though.
_________________
2012 R1200RT Midnight Blue
95 K1100LT Graphit (sold)
01 R1100RT Black (sold)

E T · Posted: Thu Jun 16, 2011 5:06 am Post subject:

old guy old bike · Posted: Thu Jun 16, 2011 7:40 am Post subject:

I'm on my 2nd set of PR2 without any problems. Will not go back to bias ply tires. Got a little over 10K on my first set.
Jeff
_________________
1993 K1100LT
2003 K1200GT Gone but not forgotten
2014 Victory Crossraods

Sonu · Posted: Thu Jun 16, 2011 12:41 pm Post subject:

gladstone · Posted: Thu Jun 16, 2011 2:59 pm Post subject:

I've only ever achieved a really stable high-speed ride on radials when I've had an RS rear wheel, and even better when matched to an RS front.

Radials on the stock rims (standard size tyres - BT and Azaro) have always been unstable for me at high speeds.

The problems appears only at steady high speeds - acceleration and deceleration seems to be stable.

Cheers
_________________
1993 K1100LT (x2!)
1998 R1100R - gone
1994 R1100GS - gone
1990 K100RS 16V - gone

Flying Duck · Posted: Thu Jun 16, 2011 3:07 pm Post subject:

I have PR2s on an LT front wheel and RS rear wheel. Stable at all speeds. I ran Azaros on the stock rims before that and that was stable too.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Sonu · Posted: Thu Jun 16, 2011 4:57 pm Post subject:

mtnroads · Posted: Thu Jun 16, 2011 5:36 pm Post subject:

Glad they're working ok with that rim. I went to the wider rear rim and radials at the same time (just recently) and the difference was huge. I'm running the new BT-023 front and rear. I just can't get over how neutral handling it feels, which must be the radials. Cheers.
_________________
2012 R1200RT Midnight Blue
95 K1100LT Graphit (sold)
01 R1100RT Black (sold)

E T · Posted: Fri Jun 17, 2011 1:04 am Post subject:

merlin geikie · Posted: Fri Jun 17, 2011 7:30 am Post subject:

The K12rs with the 5 1/2 inch rear rim takes a 180mm tyre which is about 7 1/2 inches and that is stock standard.

Tyre pressures on the K12 run at something like 42psi.

So IMO you have a fair bit of leeway with the rim width vs the tyre width as long as you keep the tyre pressures nice and HIGH.

Some folk experiencing high speed instability could be experiences the results of worn SHOCKS.

There are those who say to replace shocks each 30K mi and that peg scraping is a symptom, on these large beemers, of worn shocks n forks lowering the ride height and being in a wallowing mode. Rolling Eyes

E T · Posted: Fri Jun 17, 2011 12:38 pm Post subject: