92KK 84WW Olaf
Life time member
Number of posts : 7967
You won't get a rear tyre to do 15k miles.
My best on the K100RT was about 12k miles, I find maybe 8-9,000 more realistic. Just put a new rear on the K1100LT and the previous one did just under 9k miles down to the wear indicators over the winter from October to end of April. This was a 140/70 17 Bridgestone BT45. I am quite happy with that given type of riding it does. Fronts will last longer and usually about mid way in rears to 2 fronts to 3 rears.
I have used various sizes 100-/90 110/90 110/80 on front and 130/90 140/80 on the K100LT and RT and also 140/70 on the rear of the K1100LT. For now I stick to 110/80 front and 140/70 rear on the K1100LT and the K100RT will be getting the same.
Been very happy with them in all weather riding and it was interesting at K Fest wandering around the paddock to see a very significant number of riders using them even on track bikes. You hear various comments but mostly about life and not about grip/adhesion. To some extent you can have one or the other but not both. If someone came to me with a tyre that was down to do 15k miles I would be very fearful about the compound in wet weather for sure.
Lots of advice about planning in a tyre change at mid way and I would also do exactly that.
Its easy on a K to pull the wheels off and get a good price for fitting while you wait.
__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles.
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles
Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500