I am Blessed to be riding (2) BEAST Mode Bikes:
(1) 2001 Honda VALK Interstate OEM FR 150/80R17 77H (currently a stock Dunlop tire) Will replace with the Shinko S3 890 Touring Radial (OEM size tire)
RR 180/70R16 77H (currently a 205/55R16 Triple Tred "car tire") for $120 + $100 (the Shinko)= $220 for tires
(2) 2008 R3T OEM FR 150/80R16 (currently the Shinko 777 Heavy Duty Cruiser( almost always a mc rear tire) for $90
RR 180/65R16 (currently a Dunlop Elite) I think $150 I will replacing it with a Triple Tred 205 or a 195 "car Tire" when the Dunlop starts showing wear though. The math works out for me, and the driving conditions work out even better.
In Tallahassee's infinite wisdom, they are now putting road paint down that is very slick when wet, making it that much harder for the tires to grab the already slick road surface of shells and asphalt when stopping, turning at high speeds, and traction when leav'in an area! I don't have an existing warranty on either bike which is a concern for YOU if you are thinking about putting CAR TIREs on your bike. You don't want to invalidate the warranty. You could do like fingers does, just change out the tire when you need to take the bike in. I'm into "riding", not making them go.
Fingers, I finally upgraded the Ram-Air on my R3T, and will probably put an alarm system in the "hole" under the seat.
Ride Safe gentlemen, and always remember who is in charge.
Blessings in 2016