alright...everyone is out of 275/35/19 and 245/35/19 so3 poles

If i were to get 275/30/19 and 245/30/19 tires what would be the effects??

a shorter wall so a shorter rolling diameter?
shorter gearing...better acceleration?

Essentially....what will be the negative effects if this will work at all?

Thank you

 

30's in Boston...... Corret me if I'm wrong, but aren't your roads out there swiss cheezed up...... I dunno, you're riskin bent rims and blown tires if you hit a pot hole..... I'd say be patient and get the 35's when they're available..... I know it's only 5mm, but the more rubber the better IMO>>>