Changing to a Different Tire Size

Changing to a different tire size can have various consequences:

• The indicated speed is less than the actual speed.
• Error messages when using a radar
• Increased wear of tires and front-wheel drive clutch
• Strain in the drive train

IMPORTANT:

Any change of tire combination must conform to a combination authorized for that particular tractor. Note that it may be necessary to alter the transmission ratio. Further information on tire combinations and for calculating the transmission ratio can be found in this section of the operator's manual.

Also note that when tire size is changed certain tractor models will require the oil sight-glass to be changed. See your John Deere dealer™ for this as well.

When changing to a different tire size, an adjustment of the top speed is always necessary. Have this task performed by your John Deere™ dealer immediately after the tires are changed. In case the tractor is equipped with RADAR, a recalibration must be performed by your John Deere™ dealer.