My wife's Monster 821 is very close to needing a new rear tyre, but the choice of replacements in the standard 180/60-17 is limited to the OEM Pirelli and a Dunlop. Both are sports tyres and as the bike is being used for touring, the life of the OEM is not very good. The obvious thought is to fit a 180/55-17, but the rolling radius is 2.8% less than the OEM fitment and I was wondering if this would have any impact on the DTC and ABS?
I would be interested in this outcome I want to put PR4's on, and the closest PR4 is on the rear is 180/55/17 ? is can you put that size on the rear? That ? has all ready been answered Dealer says not a problem fitting PR4's being a 180/55/17
That's different to what the supplying dealer told me. Their stance is that the 180/55 tyre would cause problems with the ABS and DTC sensors as it has a smaller rolling radius. I think it's time to talk to the tyre manufacturers and see what they say. I still can't understand why Ducati chose this size for the M821, given the poor choice of tyres in this size.
The radius is like 9mm Difference overall if I have worked that out correct so I guess 4.5 mm lower, My Dealer did state they have fitted PR4s to other Ducati bikes as well as Monsters where sizes are different with no issues I assume. I have ordered PR4's and the Dealer will fit them.
If that's the case it's like the difference between a new tyre and a worn one, so if that affects the DTC/ABS etc. then there's a problem...
I done over 400 miles on PR4, and so far it is great, and tbh if that is the difference between a new and worn, I would have thought that ABS and DTC should account for the wear. Cannot see how it will ever effect either tbh, and it is the rear remember re abs.
