regret on the 245s? - Wheels and Tires - Tech Section

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Posted: Sun Feb 4th, 2018 05:39 am

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Dusten
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Scrambler82 wrote: Dusten wrote: I think I'm going to stick with what's on it. Going with some 265/75/16 cooper at3's this week
Sounds like a plan !
You can always re-gear... $$$, but once you get a tire size and look you like on the truck, for me it is 33's BFG-AT's, I re-geared to make the engine work in it's sweet spot !
That's how I also make it 18mpg... once, and I think there was a 20 in there too !

No regearing. The truck does fine as is. Besides it's for my 15 old next year anyways.

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Posted: Sun Feb 4th, 2018 01:17 pm

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Scrambler82
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With larger tires the truck WILL lose power, if auto-trans you may not notice it but with a manual you will need to shift to a lower gear to do the things you used to do in a higher gear... just the facts, I've lived it !

Re-gearing, yes pricey, but you will not believe what you were missing until you drive it with the new gearing.
My Ranger is 15 years old this year, less than 90K mile on the Odometer and she is running great.
... knock on wood

I know most people think it is a BIG thing to re-gear and it is in a lot of ways, but the the big thing really is the new response you get from the old Girl and the increase in milage, I gained 3 mpg and if I can keep my foot out of the floor boards I can get even better mpg !
When I first drove the truck after the re-gear, wow, I have a new truck, at least it felt that way !

It was just a suggestion to re-gear, some people do not realize just how much of a change it will be !
I got my truck to the look the way I wanted first, the right tire and rims, then I decided what gears to go with (4.56s), and although I like it the way it is I think 4.88s might have been even better... more power, Scotty ! Need the 5.0L even more than before !

There is no sense driving for long distances in the DD and not enjoy it, so take some of the work out of driving !

Good Luck on the new tires, I am getting to the point of new treads too, I have had these BFG-ATs on for over five years and the front is the only ones worn... maybe I should have rotated the tires more !

Ltr,

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Posted: Sun Feb 4th, 2018 04:21 pm

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Dusten
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Scrambler82 wrote: With larger tires the truck WILL lose power, if auto-trans you may not notice it but with a manual you will need to shift to a lower gear to do the things you used to do in a higher gear... just the facts, I've lived it !

Re-gearing, yes pricey, but you will not believe what you were missing until you drive it with the new gearing.
My Ranger is 15 years old this year, less than 90K mile on the Odometer and she is running great.
... knock on wood

I know most people think it is a BIG thing to re-gear and it is in a lot of ways, but the the big thing really is the new response you get from the old Girl and the increase in milage, I gained 3 mpg and if I can keep my foot out of the floor boards I can get even better mpg !
When I first drove the truck after the re-gear, wow, I have a new truck, at least it felt that way !

It was just a suggestion to re-gear, some people do not realize just how much of a change it will be !
I got my truck to the look the way I wanted first, the right tire and rims, then I decided what gears to go with (4.56s), and although I like it the way it is I think 4.88s might have been even better... more power, Scotty ! Need the 5.0L even more than before !

There is no sense driving for long distances in the DD and not enjoy it, so take some of the work out of driving !

Good Luck on the new tires, I am getting to the point of new treads too, I have had these BFG-ATs on for over five years and the front is the only ones worn... maybe I should have rotated the tires more !

Ltr,
I'm well aware of the concept and benefits of regearing. When we did 1 tons and 39.5s on my 4runner with dual cases we regeared to 5.38s. When we installed a blower on an older cobra we regeared to 3.73s to aid in acceleration at the track.
The size difference in going from 245s to 265s is minimal. I already have 265s so I'm completely used to the truck now.
It's only 3.5% according to a calculator. According to my gps my odometer is 3.1% off, so it's a pretty accurate calculation.
To put the truck back to a stock power level would require a regear to just 3.90s. Since I doubt those exist for the front end, a 4.10 swap is more logical. That said, the 600-700 in parts to gain the tiny amount of lost power on truck for a 16 year old is just money wasted. If we are talking much heavier tires, or 35s, sure I'd go for it.
Hell according to discount the bfgs on my truck weigh in at 53lbs each. The tires going on my truck weigh in at 40. That's a pretty significant difference.
Between the weight loss of my current tire, and the truly minimal size difference, I'll be fine.

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Posted: Sun Feb 4th, 2018 04:24 pm

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Dusten
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Also, my fuel mileage is pretty good for old 4 liter. I average high 17s to low 18s on my commute and I've seen as high as 19.5 I an extended freeway trip

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Posted: Mon Feb 5th, 2018 10:38 am

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Scrambler82
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Can't argue with anything you are saying but on paper it looks like one thing but really it does change thing little things.I went from a 29" tire to a 31" tire and didn't think it was doing anything, when in reality I was burning up transmissions and beating up engines, snf I didn't even think about mpg !The truck was a GMC, maybe thats the problem... LoL, but when I went back to the stock tires and sold it, the guys that bought it thought it was the best truck he had ever owned; IMHO, the only thing that got changed were the tires, so the simplest explanation was that 2" diameter change of the tires from 31" back to 29", made the truck a better truck... a gear change doing being the same thing.Also, when I went to 4.56s in this Ranger, the 3.0L came alive and pulled a lot better. I did go from OEM Stock tires to 33" BFG ATs and the gearing went from 4.10 to 4.56 but all and all, to me, it made the truck easier to drive.
Everyone to their own, good luck, enjoy the ride.

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Posted: Mon Feb 5th, 2018 10:44 am

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Dusten
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Scrambler82 wrote: Can't argue with anything you are saying but on paper it looks like one thing but really it does change thing little things.I went from a 29" tire to a 31" tire and didn't think it was doing anything, when in reality I was burning up transmissions and beating up engines, snf I didn't even think about mpg !The truck was a GMC, maybe thats the problem... LoL, but when I went back to the stock tires and sold it, the guys that bought it thought it was the best truck he had ever owned; IMHO, the only thing that got changed were the tires, so the simplest explanation was that 2" diameter change of the tires from 31" back to 29", made the truck a better truck... a gear change doing being the same thing.Also, when I went to 4.56s in this Ranger, the 3.0L came alive and pulled a lot better. I did go from OEM Stock tires to 33" BFG ATs and the gearing went from 4.10 to 4.56 but all and all, to me, it made the truck easier to drive.
Everyone to their own, good luck, enjoy the ride.

going from oem to those bfg's likely added almost 20lbs of rotating mass per wheel, thats a huge amount for a little three liter. Plus adding the additional rolling resistance from the width change, and the diameter change going to 33s.
In your case I can see the change 100%, but in my situation the weight change is minimal, the size difference is minimal.
Even on the chevy, you changed the revs per mile by almost 10%, a pretty good sized change.

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Posted: Mon Feb 5th, 2018 11:58 am

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Dusten wrote: I think I'm going to stick with what's on it. Going with some 265/75/16 cooper at3's this week
I'am on my second set of Coopers on my 1999 1500 4X4 Z71 Silverado. I got even ware and 70,000 miles on them, way over the 50,000 they were design for and 6 years of service.

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