Don't want to stir up a hornets nest but I will give my opinion nonetheless. The BRP engineers designed your Spyder specifically for use with Kenda tires.
nor were automobile tires designed for use on Can-Am Spyders. Just one problem is that the "bead" design of auto tires is very different than those of motorcycle tires. This alone can result in catastrophic failure. If someone had an accident while using auto tires on our motorcycles or Spyders, I can almost certainly guarantee your insurance company would not cover the loss.
In short...don't do it. It is not risking your vehicle, or, even more importantly, your life.
You have posted some good stuff on here today. Thank you.
THIS post, however, is WAY off base on several points.
Their claim that the Spyder was designed to use ONLY a certain brand of tires.....which only THEY sell......is a boat load of marketing CRAP. In the US, things like that are ILLEGAL.
The Kenda tires ARE car tires, just very light duty ones.
The rims ARE car design rims, with the proper bead for CAR tires.
Trying to use an actual motorcycle tire on a Spyder could indeed cause serious problems.
But "upgrading" your Spyder tires to something better is perfectly OK.....and the OWNERS choice to make.
The size must be compatible, of course.
And your "almost certain guarantee" is just blowing smoke in the wind.
No warranty covers damage caused by tire failure but the insurance company certainly would.
You are not doing anybody any favors by spreading these unfounded rumors.
The situation is entirely different with a 2 wheeled "real" motorcycle.