Bigger tire.... need a better gear? Ready.... and.... GO
 

Ok so the "In a nutshell" of this situation is this. My tires were quickly turning into slicks and I was told to get tread or I'd be pulled off the road (I deliver). So I went a searching and found a used set of rim and rubber way cheaper than a set of new tires so I bought em. My stock tire was 245 75 16 and the new ones are 265 70 17. The Hoe is really kind of dogging off the line. Could an inch and a half really make this much difference? In any case I believe I'm going to re gear from my stock 3.43's. What would be best? 3.73, 3.91, 4.11? Half my driving is interstate speed or better. I need some more giddy up

I run 285/45/22's and have 4:10 gears and it's perfect I did lose a 1-2 miles mpg on the interstate. Your new wheel and tire package is probably heavier this also doesn't help.

If it was an around town primarily vehicle I wish I would of put 4:30's or 4:56's

I drive 200-300 miles a day and most of it is interstate/highway

IMO 3.73s won't be worth it, 3.90s would be a good compromise between 4.10s & 3.73s

I have 275/55-20 on stock Tahoe 20s. I swapped from 3.42 to 3.90 and picked up mileage all around. Highway mileage increased below 80mph about 85 it dropped a little bit.

3.90's are starting to look good. Height wise mine are 31.6 and yours gamble are 31.9. Now to find them for a good price. Ugh, This is gonna blow

imo it would be cheaper to get a smaller tire.

i had 265/70/17 on my truck with 3.73 and it was ok but would need to down shift up hills. now im on 265/65/17 and its perfect.

for highway driving i would do Michelin LTX M/S2 or handkook RH12

150 a tire vs 156 for the ring and pinion from summit. I can install it myself so there wont be a shop charging me just a case of beer and a couple pizzas for my dads buddy to give me a hand. I tried to post to the wtb section and it didnt let me, So I posted to the general performance and it got pulled. Just wish SOMEONE had a 3.90 that I could put my hands on for cheap... only time will tell... :)

well if that's the case then go ahead and re-gear.

i would say go 4.10 would be easier to get and at 70 you would be spinning about 2140rpm vs 3.90 at 2040rpm

Only 100 rpm, thats not bad at all