well i got 20s with the 275/45/20 good year and want to go with 305/50/20 good years there 172 a tire would they fit
my truck will be droped 2/4 next week

 

quick tire height caculator
www.randysringandpinion.com

305 are going to be taller and will really fill up the 2-4 drop. I have 275 on my 2-4 drop and wouldn't want any taller tire.

If you like toyos and don't mind the 200+ price tag they make a new size 255/45-20. with the extra tread height it will keep you very close to the goodyear 275.

with extra tire material comes more weight, slower accleration. going from 16's to my 20's was very noticeable.
What brand rims do you get?

 

I have to agree with creederado. I think a 32" tire is going to rub in the front with a 2/4 drop.

Skid