Tire pressure on springers

[RR2]

Info on last thread was to run 12-15 psi on knucks.Has anyone rode on the highways with this low pressure for long distances? [300-400 miles a day trip @ 60 mph] thanks for your time

[Chris Haynes]

Yes. Many times. I always laugh when i see some guy on a rigid frame running 35 lbs in his tires. The rear tire spends more time in the air than on the ground. Remember that the low air pressure in you rear tire is also your rear suspension.

[Rubone]

Depending on the brand of tire you are using the inflation level can vary greatly. Original type tires as used on these bikes had extremely stiff sidewalls. Most modern tires do not and need air pressure to maintain their integrity. Also keep in mind that under inflated tires create heat which is particularly dangerous on tube type tires. A blowout at speed is no fun. Do not merely accept the info in the owners manual as gospel, it was written decades ago, but ask your tires manufacturer what they recommend for their particular product, and keep within a reasonable range of that recommendation. Most modern tires with proper inflation are still softer than OEM types.
Robbie

[RR2]

Thanks again guys for the tips. I was just leary of 1947 standards with heat buildup on quicker highways. 15 lbs. around town seems pretty smooth.[brakes work better too-Ha!] later