when you get bigger tires, or different rear end gears.
The speed should read fine with a GM speedometer, as the 110 and 150 are calibrated to go into the same cars with the same transmissions.
A different OD can effect the speedo accuracy, but unless it is significantly different from OEM you should not have to have it calibrated. If you do any speedometer shop can do it.
There is no speedometer cable. MPH is calibrated using a speed sensor. If your speedometer is not working, you have a bad speed sensor module.
You can get your speedometer calibrated at an automotive repair shop or dealership that offers calibration services. Some tire shops also provide this service, particularly if you've changed the size of your tires. Additionally, specialized speedometer calibration shops may be available in your area. It's important to ensure that the service provider has the right equipment to accurately calibrate your vehicle's speedometer.
Speedometer calibration differs depending on the vehicle and age. Some cars are calibrated by a technician with a computer program. Others require a gear change to drive the speedometer at a different ratio.
Different size tires and wheels. The factory size tires and wheels are calibrated with the speedometer. If a different sized tires or wheels are put on the vehicle, the speed can be off.
"Calibrate" typically refers to adjusting machinery.
every month
Yes, it's legal to have a speedometer that's calibrated in kilometers in the US. There's no law thatsays you're even required to have a speedometer in the vehicle. The law only limits the speed atwhich you're allowed to move the vehicle on the public thoroughfare. How you choose to monitorand regulate your speed is entirely up to you.
The speedometer reading differences should be negligible if you spec the tyres according to the manufacturer's manual because the tyre profile for a 15" wheel would have been fatter than that of 16" for the same car. The meter is calibrated to the inflated tyre mounted on the wheel and the reading is a close approximate of the actual speed only.
I don't think Harley has a retro fit kit to do the change, also the speedometer might not be calibrated for the XL, this speedometer runs off a speed sensor on the transmission and is sensitive. This speedometer can only be used on the FXDWG ('95-'98) Softails ('96-'98) FLHR/I ('95-'98) using retro fit Harley Davidson Part # 67418-99. Hope this helps......
The car wheel size has to be calibrated with the speedometer because the circumference of the wheel touches the ground: ergo a huge wheel like those found on heavy machinery can spin slower because with each revolution it covers... say 5-10 feet.