I routinely ground my EV (no great feat, even with the upgunned rear suspenders on mine), and just did, two-up on my Norge, this past weekend on some "interesting" back roads in western Pennsylvania.
But, for many reasons -- some involving cowardice
-- I have yet to touch down anything hard on my GRiSO. Well, OK, I guess a lowsider is "touching down."
But, self-deprecattion aside, have never had what I viewed as a happy fit of tires on it, especially the last, MP Power Pures, with sidewalls that caved in -- at least at the weight challenges I posed
-- like a virgin eager to change her status.
Anyway, I have had some MPR3's on my Norge and found them seriously fine on all the things we (at least I) want, i.e., (and in order) safety, performance, mileage..
As my GRiSO was in some need of new tires and I was a bit skittish about its "Pures," I went with MPR4's. http://www.revzilla.com/motorcycle/michelin-pilot-road-4-rear-tires
All of 20 miles on 'em, but all of those on roads I might better have avoided with new rubber, and they convey that joy we all know when we have new tires. To say more would be stoooopid at this stage, but I am interested to see how they do v. the MPR3's that have been grand on the Norge in all sorts of road and weather conditions ... and in several "pilot error" events, too.
I almost went with the GT's, intended for heavier bikes and riders (and the GRiSO when topped with me might just qualify
), but a veteran rider talked me out of those on the ground that, even "under the circumstances," I would find those too stiff for anything but track-quality roads, especially as the GRiSO already has buckboard tendencies.
We shall see.
Best from the top of Virginia,