Tire Size/Gearing/RPM

[STW]

Ok, So I have been thinking of gearing and tire size. I have seen here on the forum that 245 75R16's with 4.10's is very popular. I made an excel sheet that calculated the Engine RPM vs gearing vs speed to see what size tire and gearing get you back to stock and I came up with 265 75R16's and 4.10 are a new perfect match to stock using the 235 70R16's and 3.73's as a base.

I am trying to post pics. Need to set up a photobucket account.

Any thoughts?

S

 

[Cardhu]

can always create an album on this site and link the picture.

 

[tjkj2002]

Ok, So I have been thinking of gearing and tire size. I have seen here on the forum that 245 75R16's with 4.10's is very popular. I made an excel sheet that calculated the Engine RPM vs gearing vs speed to see what size tire and gearing get you back to stock and I came up with 265 75R16's and 4.10 are a new perfect match to stock using the 235 70R16's and 3.73's as a base.

I am trying to post pics. Need to set up a photobucket account.

Any thoughts?

S

Actually 4.30 gears would be the exact perfect match for 265/75's but you still loose some mpg's and HP due to added tire weight.4.56's would be the best choice for 265/75's but unless your only 2wd or get the steel D30 conversion from JBA it ain't going to happen.

 

[tommudd]

4.10s is not the perfect match at all
works since thats what we have to work with
but
I'd love to have 4.56s :Bye:

 

[STW]

I would expect you would tommudd with those 32's

It was a fun exercise with excel.

Thanks guys,

S

 

[tommudd]

4.10s work
On most roads after regearing I can sit the cruise and it hardly ever downshifts unless its a long hard pull
Gas mileage wise its works as well
but when I have the trailer on and loaded or down in any hills then lower would be so sweet.
Now to get someone to buy me a steel front diff :happy175::happy175:

 

[tjkj2002]

4.10s work
On most roads after regearing I can sit the cruise and it hardly ever downshifts unless its a long hard pull
Gas mileage wise its works as well
but when I have the trailer on and loaded or down in any hills then lower would be so sweet.
Now to get someone to buy me a steel front diff :happy175::happy175:

No Tom you want some 6.72 gears to turn some 54" Boggers:grd:

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[tommudd]

No Tom you want some 6.72 gears to turn some 54" Boggers:grd:

You must be registered for see images

Come on Troy, you been looking over my shoulder again at my parts list????:shrug::happy175::happy175:

 

[sevenhelmet]

Holy. Crap.

 

[ridenby]

Most forget the weight of tire,wheel combo.

 

[Ry' N Jen]

I find that 4:10's with 245-75-16's is still to high a gear for my liking.
I'd like 4:56's.
But I'll be damned to blow $1500.00 on an empty steel diff casing!
I'll wait until I SFA and go 35's and gears in the mid 5's!