Wheel and tire change

[pure pressure]

Been reading the forum for a while but my first post. I had a 2000 Excursion and bought a new one in 04. I had changed the wheels to 16" MB Motoring with Michelin LTX M/S 265/75/R16 E rated tires. They now have close to 90,000 miles and I will need to change them soon.

I pull a 38 Cigarette about 14,500 on the trailer and really do not want to lift the truck as I have added Firestone airbags and just put new Rancho shocks on.

I love the Michelin LTX M/S ride and wear and security peace of mind. I want to put on 20" rims and tires but do not want to rub.

They make LTX M/S in 275/60 TR20 and in 275/55 TR20

They also have a new LTX AT/2 tire but I do not know if it is as great a tire as the old LTX (I have had them on my two Suburbans too)

The LTX AT/2 come in 275/60 SR20 and 285/55R20

I know I need forged rims but I do not know how big I can go without rubbing on the turns.

The truck is 4WD so I am sure someone on here has done an EX or F250 extended cab.

How do you calibrate the speedo as the rolling diameter will be off. I have the Diablo programmer. Also the other tires are about 15 pounds heavier. Will that affect drive, steering, or parts wear much?

Thanks for the advice.

Carl

 

[pure pressure]

Wow, I can't believe on one knows. I would have though I wasn't the first guy to go 20" without raisng the truck.

any other places I can check?

 

[fordtrucker4life!]

I remember some members put the factory Ford 20" rims on their trucks, but do not remember who or if they had problems. Someone should chime in sometime.

 

[pure pressure]

Thanks, I just don't want to waste the time and money when I know someone figured it out since 2000.