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Old 06-29-2020, 08:09 PM #1
88mustanggt 88mustanggt is offline
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Tire weight increase vs tire size, towing issue.

its been a while since i have been on here. i still love my truck and just got some new wheels and tires at a really good deal i couldn't pass up.

my truck is a 2006 V8 sport with Bilstein 5100 and ome front coils and toytec rears, rci full skids and sliders. main mods.

i had 265/70/17 bfg at ko2. for the last 2 sets of tires on it.

i just picked up a set of 5 black rhino bead locks with maxxis razer mt 285/70/17

Garrison Beadlock Truck Rims by Black Rhino

Amazon.com: Maxxis mt-772 razr LT285/70R17 all-season tire: Automotive

my issue is this weekend i towed my trailer up north phx to flag about 7-8k foot climb. and it was horrible. performance was so much worse then i expected, the truck struggled to climb at speed when before i could stay the speed limit 90% of the time. not to mention the hit on mpg i got 7-8 going up and 9-10 coming down. before i would get 10-12 up and 13ish down. i know mpg is gonna be hit with bigger tires and what not.

now to my question.

I love having the 285 on there vs the 265. is my struggle getting up the hills towing cause of the increase tire diameter or the increase weight. if its the weight i will sell the wheels and tires and buy a set of bfg at2 in 285 C load range and not look back. but i dont want to if its not gonna fix the issue. because these wheels and tires look amazing.

the 265s weight 45lbs and 25lb wheel= 70lbs
the new 285s weight 65lb and 46lb wheel = 108lbs
bfg 285s would be 51lb + 25lb wheel = 76lb

Last edited by 88mustanggt; 06-30-2020 at 12:46 AM.
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Old 06-29-2020, 09:59 PM #2
4Runner&Airstream 4Runner&Airstream is offline
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That weight difference sure seems significant.

Iím wondering about weight, aggressive tread patterns, heavier load range, and just what some good all around tires are.

I donít want to kill my power and gas mileage since I tow a camper. I just want an all around tire than can handle higher payloads.
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Old 06-29-2020, 10:52 PM #3
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I'm guessing its the increase in diameter mostly, which effects the overall gearing of your truck.
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Old 06-29-2020, 11:55 PM #4
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Quote:
Originally Posted by Inv4drZm View Post
I'm guessing its the increase in diameter mostly, which effects the overall gearing of your truck.
That would be my guess. The gearing issue is amplified when towing I would imagine.
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Old 06-30-2020, 12:38 AM #5
88mustanggt 88mustanggt is offline
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so what you are saying is, re-gear vs reduce rotational weight to get back my towing capabilities back to close to 265 light weight setup.

here is my setup.
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Tire weight increase vs tire size, towing issue.-img_20200626_205759753-jpg 
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Old Today, 01:35 AM #6
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Quote:
Originally Posted by 88mustanggt View Post
so what you are saying is, re-gear vs reduce rotational weight to get back my towing capabilities back to close to 265 light weight setup.

here is my setup.
Regear vs. reduce tire diameter. The weight will make a slight difference, but nothing compared to the changed gear ratio due to the taller tires.
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