Years ago when 16" m/c tires were scarce a mate used a car radial tire on his WLA Harley chop back wheel.A slight power difference compared to a R3 I know but he said it handled great.

Dinosaur.

"Oh Man I only ride 'em.I don't know what makes 'em work". Donald "Oddball" Sutherland

"Don't let the bastards get you down". Kris Kristofferson

"I am only paranoid because everyone is against me". Larry [Frank Burns] Linville