ok I am not sure the logistics of getting the design to work. But ok we have bigger tires. We are going 65 on the dash and some of us 79 on the road. What controls this a little "PLASTIC" gear. Why not make the little gears to get the gauge to read correctly. There was an option for first gen's I don't see why they couldn't be made you can start by making copies of the one's that already exsist I think by aftermarket laws after 10 years they are fair game. And if they are a different material them you are safe. But it's an idea.

Erick