The rear tire on police motorcycles is fit for solo riding only. If converted to a two-up bike, that is, configured for passenger use (with luggage), then the rear tire needs to be changed to one with a higher rating.
Since it has long been Harley-Davidson policy not to mix different types of tires on the same vehicle, we strongly recommend that both front and rear tires be replaced. In order to alert the customer to this safety issue, the following warning appears on a label fitted to the rear fender (approximately 0.25 in./2.54 mm behind the domestic seat mounting hole).
WARNING
This vehicle has tires with weight ratings for one person operation. If this vehicle is modified to carry two people, the tires must be changed. See a Harley-Davidson dealer for proper replacement tires. Using improper tires can cause tire failure which could result in death or serious injury. (00096a)
NOTE
Use the tires recommended for civilian/pleasure vehicles of the same model year and family.