Picked up a Grand L3560 with a cab this spring and the L4479 front snowblower. The tractor has industrial tires and I will be blowing a dirt driveway that is just over 1/4 min long with some steep parts. I was just at the dealer to get the wonky fuel gauge fixed and asked about chains. They only recommend the rear. Most of what I have seen recommended front and rear. What is the recommendation here? The property is N Central CO with quite a bit of snow and below zero temps. Thank you.