Bias tires like the Thornbirds will get lower MPGs than radials as well - higher rolling resistance, more rubber on the road in this case and more weight and sligthly taller height.
Your speedo and odo are off by3% - 60 on speedo is really 62mph. Your mileage is slightly better in town than 10MPG and of course will always be lower than highway.
Reply With Quote
