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General Forums => The Mess Hall => Topic started by: RT on January 25, 2011, 11:37:47 AM
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So I have this little lifted jeep with intake, exhaust, and a cleaned out fuel system that twists the body through the first 3 gears and loves going 80. Problem is it's still on stock tires so it kinda looks like it's on it's tippy toes and the tires I have are getting shredded with even modest offroad use. I was going to go too 32's but I was wondering how poorly my jeep would perform on road. I know it's a jeep so I'm not one of those people who wants race car performance. Just something that can hold it's own on the highway and what-not. It's a fivespeed manual with 4.11 gears. So I was wondering if you guys could share some experiences with 31-33 inch tires and give me some feedback because I've never driven a modified 2.5 liter on larger than stock tires before.
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If you regear to 4.88 it should continue to perform well.
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When I ran 33-12.50's with the 4.10's 5th gear was rarely used. My motor was all stock, not sure with the things you have done how much better it would be. But it would not be the same as far as get up and go. Handling would be close to what it is now as far as turning body roll etc.
For bigger tires regearing is about the only fix IMO.
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If you want to be able to do 80 then go with 31x10.5R15's. You can run those with no-lift with a little bit of rubbing or add a little lift.
You're fighting two wars with taller tires. One has to do with the tires themselves. You're changing the overall gear ratio by going larger. Larger tires are heaver and will make the Jeep feel a bit more sluggish so you'll get reduced acceleration as well as braking. For every pound, it's equal to 2 pounds of sprung weight inside the Jeep. So a 5lbs increase in tires will be equal to about 40lbs of additional weight. There is also aerodynamics as a smaller tire cuts through the wind better. Larger tire also means a larger contact patch which can be more friction with the road.
On the second front, larger tires typically means lift. More lift will cut down on the already lacking aerodynamics. The isn't a problem till you reach about 35MPH. The faster you go the more wind plays into it and it's exponential.
I've driven 5 years with 32's and stock gears and when the National HWY speed was 55 MPH, it wasn't too bad. I used 5th occasionally as well. Now that it's 65MPH with most people doing 70-75, it won't cut it. You would want to definitely regear for anything larger then 31's and even for 31's you still light want to regear.
You might also want to check out the Skinny tire thread. There are pictures as well as my ramblings on skinny tires. This is after 10 years or so running 35x12.5R15's and having a daily driver.
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ok, so it sounds like 31s would be the ticket. Does it matter that much what kind of tire I get. Like a BFG KM2 vs. a A/T as long as the weight is around the same?
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ok, so it sounds like 31s would be the ticket. Does it matter that much what kind of tire I get. Like a BFG KM2 vs. a A/T as long as the weight is around the same?
MT's will probably weight a bit more then an AT typically. Also MT's are a fraction of an inch taller then AT's. Any difference won't be significant enough to notice unless you track mileage on a yearly basis though.
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sweet, thanks guys
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So they have 31" Wrangler Authority ATs at wallymart for $133, they look sexy but does anyone know how they do on/offroad
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http://www.walmart.com/ip/Wrangler-Authority/11983156
I don't know of anyone running them. They don't look to bad.
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It looks like it would work as well as any AT tire. Kind of has some mud tire look to it also with the side lugs. As long as you don't plan on doing anthing too extreme, it looks like it should work well.
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Those are Wallyworlds exclusive Wrangler Duratrac. I haven't really heard of anything bad. They are more aggressive then an AT but not as aggressive as an MT. From what I've read, they're actually pretty good BUT do pick up small rocks. Can't complain about the price though.
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Well they're out, I want American Racing steelies too and they said they wouldn't mount tires on "custom" rims because their mounting machine would destroy them.... wallymart tire co. is an :asshat:
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Well they're out, I want American Racing steelies too and they said they wouldn't mount tires on "custom" rims because their mounting machine would destroy them.... wallymart tire co. is an :asshat:
See if Discount Tires/American Tires will match a set of Duratrac's?
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See if Discount Tires/American Tires will match a set of Duratrac's?
Checked them, es no bueno.
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Buy the tires carryout and take them to a firestone close to you. As long as they are brand new tires with the stickerson then they can mount them for you for a fee. Every firestone has 1 really good machine that is made for specialty rims like those. Trust me a manage one here in oklahoma. Just make sure they still have the stickers on cause our policy is very strick on them being new. I have mount 37s on 15s and 35 series on 24s with these machines so they will work.
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See if Discount Tires/American Tires will match a set of Duratrac's?
I posted a $50 mail in for these guys on a set of 4 BFG's in the internet deal thread. If your interested RT.
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Buy the tires carryout and take them to a firestone close to you. As long as they are brand new tires with the stickerson then they can mount them for you for a fee. Every firestone has 1 really good machine that is made for specialty rims like those. Trust me a manage one here in oklahoma. Just make sure they still have the stickers on cause our policy is very strick on them being new. I have mount 37s on 15s and 35 series on 24s with these machines so they will work.
Wait, you guys will mount them for free :bow:
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Read it again a bit closer. It says for a FEE.
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I currently run 31"R15's with the stock 4.10 gears, automatic with several engine mods. It does O.K. but larger tires usually require larger axles and gears to keep up with cars on the highway. I like the Mickey Thompson Baja Claw, the new re-designed one. The original version recently won a tire shoot out in Peterson's Off Road magazine. Just remember to keep up with the tire rotation, I notice alot of wear on my passenger rear tire...probably from alot of right turns into traffic. :thumbsup:
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Read it again a bit closer. It says for a FEE.
:brick:
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No need to bang your head. Look you said you were going to buy them from there. Guess what they charge you to mount them in the price. Just buy them carryout so they don't charge the mounting and the take them to firestone and have them mounted. simple fix.
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When I went to 31s I regeared to 4:88s put it right back to stock gearing couldn't be happier
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When I went to 31s I regeared to 4:88s put it right back to stock gearing couldn't be happier
hmmm I'm a cheapo so I'm not sure I'm going to regear for something that close to stock. Plus I'm running intake and exhaust so idk if I'll really be able to tell the difference.
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Mine came stock with 205s so 31s was a big step up. Just got back from driving it up I-5 and back about 700 miles 75mph + and it works great even on the hills :clap:
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Mine came stock with 205s so 31s was a big step up. Just got back from driving it up I-5 and back about 700 miles 75mph + and it works great even on the hills :clap:
So the Grapevine wasn't a problem? Going up from the central valley to the LA basin is a tough haul for a lifted Jeep. I'm barely doing 55MPH if I"m lucky.
Have any pictures?
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Hills dude not mountains :eek: I was going north into Washington from Oregon not south California
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My money pits :'( the 97 four banger
(http://img130.imageshack.us/img130/919/1000200sn.jpg)
Shot at 2011-01-31
my 01
(http://img35.imageshack.us/img35/6184/img0406p.jpg)
Shot at 2009-09-10
my 01 and 06 Rubi
(http://img71.imageshack.us/img71/3288/1003594mq2.jpg)
Shot at 2008-07-29
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Hills dude not mountains :eek: I was going north into Washington from Oregon not south California
Ah, the flat side. :lol: That's pretty easy especially once you get to Santa Rosa and up to the border. The planes in the CA central valley are rough since there is no wind protection and then the Grapevine into LA is really tough.
Looks like you got it really bad if you own all 3 TJ's at the same time. That's pretty crazy. :yikes:
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Looks like you got it really bad if you own all 3 TJ's at the same time. That's pretty crazy. :yikes:
Yeah it's a jeep thing, had it for years :smile: I own all three right know I keep telling the wife I'm buying her a new jeep everytime I buy one :dance:
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I have been running 32"s in my YJ for a couple of years now w the stock gears. It has been as bad as going 35 mph on I-25 due to a 50 mph headwind. But .... I have also been going 80 on I-25 with a good strong tailwind.
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I am new to this but I don't really see a need to regear for 31s. I just bought my 99 four banger a month ago and it has 31x10.50 mts on it and gets up to 65 to 70 with no issues on the highway. I will however be regearing to 4.56s or 4.88s when I put my lift and 33s on it.
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You would if you went from the stock 205s that came on the jeep and than jump right to 31s. you are just use to not having any pep, put a set of 205s back on there and it will come back to life.
The biggest problem people have is putting bigger tires on and not regearing, than thinking its great or livable.
Lucky for me I do all my own work so it just cost for the parts so it's not that big of deal.
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Very true. I never did have the 205s on it that came stock. I don't do all the work my self but most but I manage a firestone so I have ase techs to do it for free and get cheap cost on parts which helps a lot.
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Very true. I never did have the 205s on it that came stock. I don't do all the work my self but most but I manage a firestone so I have ase techs to do it for free and get cheap cost on parts which helps a lot.
Without all of the extra weight a 2.5L with stock 205's is very quick and fun to drive. The Jeep feels really small if you're used to lifted Jeeps. Even going from 33's to 31's is a big difference. Regearing with 33's can give you back the small Jeep feel to some extent. It never feels as quick when you're dealing with 35's or larger though. All that extra weight associated with a running 35's slows you down even more so.
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Yeah its my first jeep so I am going kinda slow with the mods and taking my time doing my research on forum. I like the 2.5. It has plenty of pep for the driving I use it for around town and the mild trails I ride on. I don't think I will ever go with anything over the 33s and if I do ill just swap in a 350 and some dana 44s but I don't see that happening. I will prolly regear down the line and do some bolt ons but I didn't get the TJ for speed. I still have my lifted denali if I want power.
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There is no real need to do a 350 swap for 33's or larger. Just regear. It won't be as quick but then you would already know that. If you're staying gas then a 5.3L Vortec would be teh swap to do.
Check out the Skinny tire thread. I think there are a few lifted jeeps on 31's.
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Howcome they never had a v8 option in the TJ's and Yj's, the engine bay is more than big enough to take it and a v8 with d44's sounds like a wicked jeep setup to me....a little overkill even.
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Howcome they never had a v8 option in the TJ's and Yj's, the engine bay is more than big enough to take it and a v8 with d44's sounds like a wicked jeep setup to me....a little overkill even.
Bean counters, gas mileage averages, for the most part.
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Bean counters, gas mileage averages, for the most part.
Since when does putting an underpowered motor in a brick save gas?
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Since when does putting an underpowered motor in a brick save gas?
Good question.
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not being able to drive faster will save you gas
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What about 32x1050's on stock alloys?
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What about 32x1050's on stock alloys?
Who makes a 32x10.5R15? Interco?
Most Aluminum OE wheels are either 7" or 8" so a 10.5" tire will be fine. I'd probably go with the 7" though.
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I have the 15x7 grizzly wheels.