In a week I'm going to have my 99 ls 1500 2wd extended cab lifted with a 3" body lift kit. I was wondering if i got 305/70/16's would they fit or rub?

i say you'll be fine

On a 3500 2wd. No lift

They rub a little on really tight turns (Big deal)

I loaded over 2 tons today on the bed and they held up really well.

They are a lot heavier than the stock tires.

Might want to look into a Hyper Tech for speedometer fixes.

Will raise your tire height about 3 inches. Did me.

Will throw your speedo off about 5 mpg so watch those schools zones.