01-29-2019, 05:36 AM
While cost is always a consideration, a motorcycle manufacturer calls for a certain specification of what should work best when designing a bike, suppliers submit samples, they get tested and approved. They get installed on new bikes and a supply line is provided for those particular tires from those manufacturers as OEM replacements. That exact tire that the bike was designed for will be available from them.
Of course you can get cheaper/more expensive, better/worse tires in the same sizes. They can't control supply chains outside that. Tire manufacturers are always changing compounds/tread patterns/dimensions, or discontinuing/replacing a model or size.
A good example was a complaint of wobbling under certain conditions (like taking both hands off the bars!) on a touring bike when the OEM tire was replaced with the same brand/model/size from the aftermarket. The OEM replacements from the dealer didn't have that problem.
Of course you can get cheaper/more expensive, better/worse tires in the same sizes. They can't control supply chains outside that. Tire manufacturers are always changing compounds/tread patterns/dimensions, or discontinuing/replacing a model or size.
A good example was a complaint of wobbling under certain conditions (like taking both hands off the bars!) on a touring bike when the OEM tire was replaced with the same brand/model/size from the aftermarket. The OEM replacements from the dealer didn't have that problem.