| From | Message |
black03dakota
Dodge Dakota
JOIN HERE
4/27/2003
23:17:24
|
 Subject: change gears or tire size?
IP: Logged
Message:
i have a dakota with the 4.7 auto with 3.55. It has the stock 265/70 R16 tires. Will going to a smaller tire that is 255/55 R17 yeild similar results if i change my axle ratio to 3.92 ratio? I'm looking for better acceleration. I want to buy the R/t rims anyway. My truck is a 4x4 and changing axle gears will be expensive. I bought the 4x4 not for off roading but because of the crazy winters here up north.
|
Jeff W
DakotaEnthusiast
4/28/2003
07:03:45
| RE: change gears or tire size?
IP: Logged
Message:
Yes, changing to smaller tires is the same as changing to a lower gear ratio.
Do a search, there's a formula around here somewhere to calculate tire size/actual gear ratio.
'02 Sport 4.7 auto, Gibson exhaust, homebrew K&N cold air, 275/60 BFG Radial T/A's, Infinity CD w/Pioneer & Infinity spkrs & Kenwood powered sub.
|
HSKR
Dodge Dakota
JOIN HERE
4/28/2003
10:49:01
| RE: change gears or tire size?
IP: Logged
Message:
Effective Gear Ratio Change
Rearend ratio with 265/70 R 16's 3.55
Rearend ratio with 255/55 R 17's 3.87
The help from the lower gear ratio will be cancelled out by the extra wight from the R/T wheels.
|
black03dakota
Dodge Dakota
JOIN HERE
4/28/2003
12:09:35
| RE: change gears or tire size?
IP: Logged
Message:
Why would the weight of the R/T wheel make a difference? I'm dropping from a 31" to a 28" tire. If anything i would think that the tires i have now weigh more than a 28". Has anyone else done this to increase performance?
|
HSKR
Dodge Dakota
JOIN HERE
4/28/2003
15:01:31
| RE: change gears or tire size?
IP: Logged
Message:
It's not the tires that woudl weigh more, it's the wheel. The R/T rim/tire combo is 62lbs stock. Not sure what your stock combo wieghs, but I'd be willing to bet it's less than 62lbs. And that is all rotational weight which affects performance more than hung weight.
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
