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Folks with 33's

tuckersnator

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tuckersnator Enthusiast

tuckersnator

Posted
Posted

Hell all. I am about to pull the trigger on 33" tires. I have concerns though about losing power and towing capacity. This 5.3 Sierra already has a hard time getting out of its own way. I have a (roughly) 3500lb travel trailer that I haul a handful of times over the summer. I have 3.42 gears and it pulls ok now but I am worried that dropping that ratio with 33" tires will kill it. Am I worrying too much? Does anyone else have this set up and can advise?

Waaazooo Senior Enthusiast

Waaazooo

Posted
Posted

Hell all. I am about to pull the trigger on 33" tires. I have concerns though about losing power and towing capacity. This 5.3 Sierra already has a hard time getting out of its own way. I have a (roughly) 3500lb travel trailer that I haul a handful of times over the summer. I have 3.42 gears and it pulls ok now but I am worried that dropping that ratio with 33" tires will kill it. Am I worrying too much? Does anyone else have this set up and can advise?

No issues. I have 34x11.5 on my truck (pretty much the same truck). I tow a 7500lb wet trailer. No remarkable issues. It's not passing sports cars uphill... but it's not being passed by 18 wheelers either.

 

 

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Rkaroll953 Enthusiast

Rkaroll953

Posted
Posted

use this website to pick out your tires

http://tire-size-conversion.com/tire-size-calculator/

 

stock tires and wheels are about 80-90lbs a piece. i just got some 285/70/17 toyos that weigh 58lbs and the rims are 27. no loss at all and still getting same milage.

 

i used to have 34/12s and i lost milage and power but my 5.3 still towed beautiful 3500lbs is not that heavy u shouldent worry at all.

jimmyboy8301 Senior Enthusiast

jimmyboy8301

Posted
Posted

I lost a little acceleration but it was minimal

 

 

2017 Chevy Silverado LTZ Z71 6.2L

4.5" Zone

22x10 AF Grips

33x12.5 Nitto Ridge Grapplers

Instagram @wildchevys

Spurshot Senior Enthusiast

Spurshot

Posted
Posted

Increased diameter will work against you in acceleration and fuel economy. Also, wider and more aggressive tread is a negative for economy. I'm running 33x12.50x18 at/mud tires and my mileage is about 12.5 city/15 hwy with my 5.3L. That's my driving habits, on my routes. As they say: your mileage may vary.

 

My advice: don't go with more aggressive tread than you need.

ChevyRoofer Senior Enthusiast

ChevyRoofer

Posted
Posted

Increased diameter will work against you in acceleration and fuel economy. Also, wider and more aggressive tread is a negative for economy. I'm running 33x12.50x18 at/mud tires and my mileage is about 12.5 city/15 hwy with my 5.3L. That's my driving habits, on my routes. As they say: your mileage may vary.

 

My advice: don't go with more aggressive tread than you need.

 

Spot on, it's just based on tire size/aggressive or not and how you drive - I'm at a 285/70/17 (E-rated) and I'm running 16 city/20 hwy. I do have a 3.08/8-spd and E-assist though.

Aaron1085 Senior Enthusiast

Aaron1085

Posted
Posted

Damn 5.3 is slow as it is. My neighbors Tundra TRD Pro smokes me WITH E rated 295's

 

 

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