I thought this reference to be worth keeping.  The BMW has to be tied down differently from most, and not from the handlebars. There is a great article from BMW Aftersales that has photos and very explicit instructions. You will need soft-ties to accomplish this.

No, silly. We did not escort wildflowers but we did see a bunch! Escorted the Hill Country Advocacy Center's annual fund-raising bicycle ride, the Wildflower Pedal Power ride originating from the pavilion on RR 1 near the LBJ Ranch. Thanks to the guys who helped: Mike Atkinson, Mike Cornett and his San Antonio riding buddies Tom Wilmotte and Dick Kreutzer.

From http://www.advrider.com/forums/showthread.php?t=47597

List of Replacement Alternator Belts
I needed to help someone find a replacement alternator belt on the road and waisted a lot of time searching for aftermarket numbers. I am sure you can understand how frustrating it can be trying to deal with the people who... lack imagination ;-) and that includes some dealers. I want to compile a list of replacement belts, please check and comment if you have additional information, Thanks!

Their blurb:

BMWSportTouring.com is a privately owned web site that exists to promote an on-line, on-road community specifically related to sport touring on BMW motorcycles. Through our Discussion Board, especially, we share about mechanical issues, accessories, and what it means to ride well. We also share great stories of our sport touring adventures and make plans to get together again. Welcome!

This is "the" machine for me. Well, for now. Inset is of me and Jen at the Black Canyon of the Gunnison on our honeymoon in 2001.

Detailed specs from http://www.bmwscruz.com/motorcycles/1999/99r1100rt.html

R 1100 RT ABS Comfort, speed and handling on a cross country tour? Who says a touring bike can't perform. Our number two seller is back with additional colors. It virtually remains the same in every other way. Colors: 275 Boston Green, 701 Sinus Blue Metallic, 703 Glacier Green Metallic, 704 Graphite Metallic, 734 Amarena Red Metallic, 745 Opal Blue Metallic, and 999 Night Black. Seat Color : Black Standard Equipment: Ergonomics package, ABS II, Saddlebag mounts, Rider's Information Display (RID), catalytic converter, power accessory socket, hazard warning flashers and single key lock system. Roadside Assistance Package & MSF Riding Course is also included. Optional Accessories: Saddlebags, engine protection guards, alarm, luggage rack, top box, heated grips, tank bag. Please refer to the BMW Motorcycle accessory catalog for further options and clothing. Retail Price: $15,900.00 (includes freight)

Front tire 120/70-ZR 17 tubeless
Rear tire 160/60-ZR 18 tubeless
Usual source is Discount Motorcycle Tire & Accessories at www.dmtaonline.com. Last price shipped for two tires was $223.