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The MT 3574's (current drag tire) are 28x11.5x17. That's almost identical in size to 285/50/17, which is what I used for the tire and rim calculator
So I'm right there with you. That's why I asked about the 305/50/17. That would be about perfect. I current run a 275/50/17 and they are a tad small. I might go with 325/45/17 this spring. A little taller and a little wider.
ok, if they're a 30" tire the difference between a 28" and 3.73 vs that basically 30" tire and 4.10 isn't very much. It's like 1 mph in 1st 2 in 2nd and about 3 in 3rd. 4th is irrelevant because you're not going that fast lol.
ok, if they're a 30" tire the difference between a 28" and 3.73 vs that basically 30" tire and 4.10 isn't very much. It's like 1 mph in 1st 2 in 2nd and about 3 in 3rd. 4th is irrelevant because you're not going that fast lol.
I did some calculating in first gear, cause that's where all the action is
4.10's with the new tires in first gear at 35mph turns about 6702 rpm (figured with a 30" tall tire. With a 29.5" tall tire it's a little over 6800)
3.73's with the old tires in first gear at 35mph is 6533 rpm (28" tall tire)
If it has enough power to turn 120mph in the 1/4, that's still only 6282 in 4th gear, so there's plenty of room on the big end for the 4.10 gears
Not a massive difference, but hopefully enough to net an over all improvement without throwing the transmission shift pattern into a funk
oh and it will shift into 4th
Last edited by rojizostang; 12-13-2018 at 06:32 PM.
Are you really only turning 67-6800 rpms on that thing? That's crazy low for a coyote to me. Not at least like 7k?
Originally Posted by TX-Ripper
Definitely need to shift higher
His truck is a 2013, that’s prior to all coyotes getting the Boss rods and valve train, so it’s probably a safer bet to keep it 7k or lower. That said his 4.10 gears a crying for more rpm
12-13-2018, 05:12 PM
