Tire size question
#1
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Tire size question
This q is for those more inclined toward making your rig more streetable that trailable.
PreRunner came with 265/75/15 Firestone Wilderness AT's on it. Put plainly, they're crap. I tried them in the mud - bad. I tried them in the rain bad bad. Since I'm not a fan of these I'm getting some smaller tires that will help with the MPG (2wd off road with no locking rear diff...what's the point?).
I'm ordering some Yokohama Avid ST's for them. I wanted to get some 245/60's for it but was told by a TireRack guy that he "wouldn't recommend that fitment" - to get the 70 series instead.
What do you all say. You think going with the smaller size will cause problems? Advantages of the bigger size?
PreRunner came with 265/75/15 Firestone Wilderness AT's on it. Put plainly, they're crap. I tried them in the mud - bad. I tried them in the rain bad bad. Since I'm not a fan of these I'm getting some smaller tires that will help with the MPG (2wd off road with no locking rear diff...what's the point?).
I'm ordering some Yokohama Avid ST's for them. I wanted to get some 245/60's for it but was told by a TireRack guy that he "wouldn't recommend that fitment" - to get the 70 series instead.
What do you all say. You think going with the smaller size will cause problems? Advantages of the bigger size?
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Originally posted by RebuiltRunner
(2wd off road with no locking rear diff...what's the point?).
(2wd off road with no locking rear diff...what's the point?).
chances are it'll mess up your odometer and speedometer. plus your gearing will be off
dunno how much though
it will be hard to calculate your gas milage savings as i said before, your odometer will be off so it'll show a much better gas milage report than what you're actually getting
only way you could really test your gas milage is find out exactly how far it is from point A to point B (a full tank, or half a tank and turn around) on regular tires, then go for the smaller ones and test it.
Last edited by L33T35T 4Runner; 04-25-2003 at 03:32 PM.
#3
Well, for starters, the tire size you want to go with are 26.5" tall (compared to 30.5" tall stock). That in itself is a very big difference. Your speedo will be reading 70mph when you're actually doing 60.
Yes, you'll get better off the line performance, but you'll be turning some high rpm's just to keep up with highway traffic.
I think in the long run you'll be happier with a taller tire. Maybe something that is about 29.5" tall. Just enough to help your off the line but not enough to jepordize your highway mileage.
Hope this helps,
Todd
Yes, you'll get better off the line performance, but you'll be turning some high rpm's just to keep up with highway traffic.
I think in the long run you'll be happier with a taller tire. Maybe something that is about 29.5" tall. Just enough to help your off the line but not enough to jepordize your highway mileage.
Hope this helps,
Todd
#6
The 245/70/15 tire is , like you said, 28.5" tall.
Your speedo will read about 64mph when you're doing 60. Not too bad.
If you travel above 75mph (speedo reads 80) consisently, you may want to think about a slightly taller tire.
You can also go with a 255/70/15, that is 29" tall. Difference in speedo readings will be smaller (multiply actual by 1.05 vs 1.07 with the 245/70's and 1.15 with the 245/60's).
Or if you want the short sidewall look, you can increase your wheel diameter to 17" and get 255/60/17 (29" tall).
I currently have 17's on my 2wd (lifted, see website ) with 27" tall tires. I am currently undergeared (stock tires are 25.5" tall) and my performance suffers a bit.
I'm looking into getting taller tires (probably about 29-30") and regear my diff.
While at Tire Rack, when viewing the tires, there's a tech section for each tire.
That will tell you how tall each tire is, and a bunch more stuff.
Although, I'm not sure how accurate it is, it's a good guide.
Hope this helps,
Todd
Your speedo will read about 64mph when you're doing 60. Not too bad.
If you travel above 75mph (speedo reads 80) consisently, you may want to think about a slightly taller tire.
You can also go with a 255/70/15, that is 29" tall. Difference in speedo readings will be smaller (multiply actual by 1.05 vs 1.07 with the 245/70's and 1.15 with the 245/60's).
Or if you want the short sidewall look, you can increase your wheel diameter to 17" and get 255/60/17 (29" tall).
I currently have 17's on my 2wd (lifted, see website ) with 27" tall tires. I am currently undergeared (stock tires are 25.5" tall) and my performance suffers a bit.
I'm looking into getting taller tires (probably about 29-30") and regear my diff.
While at Tire Rack, when viewing the tires, there's a tech section for each tire.
That will tell you how tall each tire is, and a bunch more stuff.
Although, I'm not sure how accurate it is, it's a good guide.
Hope this helps,
Todd
Last edited by Todd E; 04-26-2003 at 04:26 AM.
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Tire size update
After being utterly conflicted by you all's suggestions and my utter belief that if I put 5 tires on my Taco it'll get 42 m's to the g (you guys all made good point, thx) I've decided to forego the tires just yet and concentrate on getting my air intake situation straight (who's got an extra airbox the wanna give me). I may just wait to get the tires after I take the truck in to get the frome straightened a litle bit more.
Thanks again.
Thanks again.
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Re: Tire size question
Originally posted by RebuiltRunner
265/75/15 Firestone Wilderness AT's
265/75/15 Firestone Wilderness AT's
#11
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Smaller tires might give you WORST fuel economy on that truck. On an underpowered truck, a smaller tire can improve fuel economy so that it doesn't have to pull so hard to move it. But on a newer Taco (4 or 6-cyl have lots of power compared with earlier ones), the smaller tire might just have the engine spinning so fast that it uses more fuel. You might be better off with the larger, stock size. Just like the principle of overdrive, a slower-spinning engine generally uses less fuel.
Eric
Eric
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yeah, once I finally get around to changing them, I'm pretty sure I'm going to go with a 29 inch at least.
Dag, I really wasn't spelling on that previous post.
Dag, I really wasn't spelling on that previous post.
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I agree with YoungFeller, going with a smaller diameter tire will raise your RPMs and you'll actually use more fuel. Start looking for a stock size tire that has a narrower tread - manufacturers can have different tread widths. My new 265/75r16 MT/R's are actually almost an inch narrower than my old 31x10.50 bridgestones. Even though the 265's have the same width the tread is definately not the same.
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