F.Y.I.
Own '95 GL1500 sidecar rig almost 13 years. Learned thru use: Metzler 880 Marathon REAR tire has weaker sidewall than Avon Venom, so stuck with Venom[front & rear]until switching last riding season to Austone rear tire[SUPER tire for our rig!]. Venom rear tire was TOO WIDE to fit in my swingarm. Avon widened it over previous Venom and it rubbed on right inside of swingarm. Austone is a God-Send! My two cents.
.....papasmurf
P.S. Still run Avon Venom FRONT tire, as it handles well on our rig.