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Old 04-23-2009, 09:05 AM   #21
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Quote:
Originally Posted by hunt4240dw View Post
Bocephus - Have you corrected your computer for the larger tires? If not, it will throw your speedo off. The larger tires also reduce towing capacity because the weigh more. If you got a custom computer tune, you can get more HP and TRQ from you mods and correct for the larger tires.

David
i dont have custom tune. there are not any companies that have released a GOOD tune for the 5.7. unichip is about the only one that would be worth buying, it costs $700+, and i dont think it is worth that.

and no, i have no corrected for the larger tires. stock tires are 32'', these tires are 33'', so there isnt alot of difference. and when i told the story above, i compensated for the difference. when i say i was going 65....i had the cruise set at 63.
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Old 05-01-2009, 07:18 AM   #22
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We have a 2008 Tundra with the 5.7 motor and pull a 28' TT 1999 Gulf Stream. You don't even know the trailer is there. We put it on cruise and go on down the highway. The trailer weighs around 6000lbs. I am not sure what your problem could be but our tundra has no problems. The towing capasity is around 10,000lbs. I really do think your truck has issues!!
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Old 05-11-2009, 02:00 AM   #23
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I have a 2008 Tundra TRD 4wd with 4.30 axle ratio. I recently sold my 31' Toy Hauler that weighed 9500lbs fully loaded. I didn't have any probs towing at all. It justs used a whole lot of fuel above 70 but would pull at 75 easily. Upgrading to a fiver next month with a dry weight of 7900lbs. I'm not expecting to have any probs towing this trailer either but will upgrade to Load Range E tires before I haul the fifth wheel.

I don't use the cruise control when towing and only use the Tow/Haul feature. I prefer to keep it at 60-65 for better economy (8-10mpg).

I would test drive another Tundra, hookup your trailer and see if the drag goes away.
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Old 07-08-2009, 09:15 PM   #24
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I must agree with fellow tundra owners on here. I have a 2008 DC tundra with 5.7 4x4 I just purchased a 28 ft shockwave 5th wheel 6900 lbs dry. I added supersprings to the truck but it tows like a champ.
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Old 07-09-2009, 10:01 AM   #25
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Add another Tundra owner to the mix. I have a 2007 5.7 4x4 TRD and have towed a 5k pound boat like it was not even there (ok, you could tell it was there...but it pulled really well). I am ordering a Rockwood 8306 today and expect to have no problems towing it.
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