Did 275/40's throw off my gearing?

[J.Cagle]

Just curious. I put 275/40r20's on my car the other day. I did have 255/30r20's. Did the taller tire throw my gearing off enough to make my acceleration suck? Thanks, Jared

 

[stkjock]

yes, you went from a 26" to a 28.4" tires

dont know what gear u have... but i.e. 4.10s would from a 4.29 to 3.75 effective ratio

 

[J.Cagle]

I have the stock 3.55 gears. So, in order to get my acceleration back I need some 4.10's huh?

 

[stkjock]

I have the stock 3.55 gears. So, in order to get my acceleration back I need some 4.10's huh?

well if you want the 4.10 feeling with those tires you need 4.30s, a 4.10 will be an effective 3.93

 

[jroc07gt]

i have 4.10s and i was running 275 40 17 nitto 555r's daily. now i have the stock fanblades and 235 50 18 bfg's. i can definitely feel the loss of acceleration.

 

[J.Cagle]

I went from the stock 235 55 17's to these 20's. I might as well have swapped a 6cyl into my car. Ok, maybe its not that bad, but I don't like it. Maybe the loss of acceleration will help my 60ft time since I wont be spinning so hard LMAO!

 

[jroc07gt]

def 4.30s!

 

[J.Cagle]

I wonder just how bad 4.30's would affect the drivability of it? I use my car for a DD.