After learning as much as I could be reading here (Thanks everyone), I had a local shop install 1.5" AS and 305/18 BFG AT KO's. I love the way the truck looks now.
I have noticed 2 things:
When I drive about 95km/h (55 mph) I have what feels like a tire out of balance in the rear. Faster or slower it is not nearly as noticeable. Should I have them check tire balance, or could it be a worn shock causing the feeling. Truck has 60, 000kms (36,000 miles).
Also, they did an alignment, but I am noticing the front tires ae wearing more on the outside half than the inside half. Could it be a tire pressure issue (what is the norm for these tires? - load renge E), or should I have the alignment redone?

Any input would be appreciated.

Thanks.

 

Sounds to me like an alignment issue. I'd have it redone and get that rear end shudder checked out too.

 

Thanks for the quick reply.

Any ideas on the best tire pressure for these tires on my F150?

 

I've always had great luck with 40 psi.