265/75/16 to 33x12.5x15 on 3:73 Gears - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 02-12-2011
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265/75/16 to 33x12.5x15 on 3:73 Gears

I've been running E range 265/75/16 MT MTZ's for about 40000km and am looking to get a BL and 33x12.5x15' MTZ's on 15x8 ProComp 7069 rims. I noticed a big difference when I went from stock tires 255/70/16 to 265 MTZ's but have gotten used to it over time. When I upgrade to 33x12.5 MTZ's after a BL I don't expect to notice much difference as the new tires are only .8" taller and 3 pounds heavier per tire. Truck is an 08 4.0L 5spd with 3:73 gears and currently get 16-19 mpg. Think I can manage on this setup for awhile?
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Old 02-12-2011
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You'd be surprised a what a small change can do. I have the same setup but with 4.10's. I couldn't imagine it with 3.73's. I want to upgrade too 4.56's.
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Old 02-12-2011
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When I first seen the title I was going to explain that there just about the same overall diameter. The 5 pounds is not a whole lot. The width is going to cause a bit more drag. I ran that same setup on my 2008 sport manual with the same gears. It sucks for wheeling and towing anything. Not good for the clutch at all. But still drive able. Plan to re-gear. I went to 410's on 33's worked decent. Then i went to 35's and need more gear again :(

Do the right gear the first time lol
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Old 02-12-2011
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Drive her till she blows....gears that is, then upgrade to 4.10's. Or swap em out now.
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Old 02-12-2011
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"Drive her till she blows" What is going to blow. Not the gears thats for sure. That comment makes no sense.
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Old 02-12-2011
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My 4.10s changed a little but not too much would imagine 3.73s would change alot

Get a tuner though so your shift points wont be horribly off


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Drive her till she blows...
Thats what she said
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Old 02-12-2011
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lol what shift points its a manual trans is it not? He says 5 speed.
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Old 02-12-2011
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Yup 5spd Manual... Tuners not going to help much
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Old 02-12-2011
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If you do regear (which you absolutely should) you should go ahead and do 4.56s. Skip the 4.10s all together.
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Old 02-12-2011
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Meh, your fine dood. Honestely, are you really gonna do a swap? Who knows. Know what, never mind.
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Old 02-12-2011
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Your effective gear ratio will be 3.45. The difference between stock and the 33x12.5 is 7.6%. If you dont tow or haul much don't worry about a regear. Do you really want to turn 2500+ rpms on the freeway anyways? It's excessive imo. If you really wanna regear go with 4.10's it will bring you back to stock gearing plus a little more
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Old 02-12-2011
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I plan on trying the 3:73 with 33's for the summer and decide over the winter if i'm going to regear.
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Old 02-13-2011
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Originally Posted by Novak48 View Post
I plan on trying the 3:73 with 33's for the summer and decide over the winter if i'm going to regear.
By that time your clutch will be fried and so will your patience, do the 4.56 with the tire swap, save yourself some indigestion. BTDT
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Old 02-13-2011
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I was going to say something similar but I figured the best lessons are learned the hard way.
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Old 02-14-2011
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i have been using 33's and 3.73 for over a year, it isnt as bad as people say/think, i plan on gearing soon tho...i have a 4.0l
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Old 02-14-2011
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I currently have 33's with 3.73 gears with the 3.0, and its not toooo bad. It can be kind of annoying on the highway at times but I have gotten used to it.
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Old 02-14-2011
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I currently have 33's with 3.73 gears with the 3.0, and its not toooo bad. It can be kind of annoying on the highway at times but I have gotten used to it.
Omg that must be horrible... I cant even imagine that. Mine is OK and i have 32.8's with 4.10 gear and its not the best. You really need 4.56 IMHO
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Old 02-14-2011
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I'm running 31's on 3.73 gears with a 3.0L auto. I want to go for some 4.10's to give me some extra boost.

33's might be a little fun on ya with those gears and a 3.0L.
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