calvin

This 4.10 is killing my mpg!! I do long distance highway driving with no load through the plains states where the speed limits are 75mph. I usually set the cruise at 80 mph but it's running at 2500 rpm which = 14mpg. I know I can just slow down but Nebraska's 500 miles long and not much to see.
Will 315's (bfg AT's) fit on a 2003 ctd 2500 4x4 quad cab long bed without rubbing??
That should lower the rpm's a little and get me a few more mpg.
Thanks for the help.

Gumby

I don't have 4:10 gears, but I noticed a 200+ RPM drop when I put on the 315/70 tires. My RPM's at 70 mph are 1800 & 2000 at 80 mph. The tires really fill up the wheel wells & unless I'm turning REALLY sharp, they don't rub at all.

BamBam

I have the 315's and they are great...I am running about 2100 RPM at 75...real sweet. They rub a little at full lock but other than that minor thing they are great..and soffen up the ride a little too.

03dodgeram

i have a 3500 srw 4 door long bed 4x4 with the 315/70 and they do not rub at all. even when its flexin a little it still doesnt rub. i havent had they speedo rest but according to my trip oddometer and computer i lost almost 1.5 mpg. i dont know if this is right i havent check it the old fashioned way yet but i love the tires they really "beef" up they truck.

just my 2cents

jesse

BamBam

I acutally gained a 1 MPG...but you have to use the GPS to get the accurate miles and speed.

indiana bowhunter

BamBam and 03dodgeram, do you have pics of your trucks available? I'm wanting to see a gen. 3 with 315's before I buy.

Thanks.

03dodgeram

i dont have one right now but if you give me a day or so ill take one and up load it. i say go ahead and buy though. youll be pleased

BamBam

It's been raining here so I have not had a chance to get her cleaned up...but hope to real soon...I thing UTAH has a picture posted of his.

Mike67RS

Click the link below for pics of my shortbed with 315's. I had no rub at stock height. I now have 2" spacers up front. Sorry, I do not know how to post pics. Best price I found was Tirerack.com @ $119 each plus about $50 shipping. I had Americas Tire install and balance for $12 each. (I called 4 different Americas Tire shops and got a different price from each one, so shop around). Mike

http://www.geocities.com/mike67rs/Dodge_Ram.html

indiana bowhunter

Thanks Mike! Great looking truck.