Max Tow Package - "P" rated tires only?

[Jon A]

The issue for me is that a "p" rated tire is typically softer and when under load, will wear faster than an 8 or 10 ply LT tire. ...

 

Don't get me wrong, I completely agree. I'll have new tires on mine within a week of taking delivery. But, I'd do the same thing with a 3/4 ton as well. Though they may be rated for more load, they're still cheap, lousy tires.

[TxTruckMan]

I wouldn't worry about it. I believe most of the rubber compounds between P and LT tires are the same (with obvious exceptions). LT tires generally just have more belts and plies. I remember once I dropped down from a set of LT Duellers to P Duellers and after 4 years the P series had a higher weight rating.

 

Also, I think the key word in the max tow package is TOW. I believe the load ratings are pretty close for each rear end.

[full_throttle]

I wouldn't worry about it. I believe most of the rubber compounds between P and LT tires are the same (with obvious exceptions). LT tires generally just have more belts and plies. I remember once I dropped down from a set of LT Duellers to P Duellers and after 4 years the P series had a higher weight rating.

 

Also, I think the key word in the max tow package is TOW. I believe the load ratings are pretty close for each rear end.

Actually I believe that there is 2200lbs difference in load ratings / towing ability.

[2017HD]

From the Chevy Vehicle Online Ordering site

 

KNP Cooling, auxiliary external transmission oil

cooler

1 - Included and only available with (L83) 5.3L

EcoTec3 V8 engine.

 

It is not a part of the NHT Max Tow Package:

 

Max Trailering Package, includes 9.76" rear

axle, (GT4) 3.73 rear axle ratio, (JL1) trailer

brake controller, enhanced cooling radiator,

revised shock tuning for increased control,

heavier duty rear springs and increased

RGAWR

LT Includes (G80) heavy-duty automatic

locking rear differential and Z82 Trailering

Package. Requires (L83) 5.3L EcoTec3 V8

engine. Includes (PZX) 18" x 8.5"

bright-machined aluminum wheels with

(RBX/RBW) 18" tires or may upgrade to (RD4)

20" aluminum wheels with either (RC7) or

(QSS) 20" tires.

LTZ With (L83) 5.3L EcoTec3 V8 engine,

requires (PZX) 18" x 8.5" aluminum wheels

and (RBX/RBW) 18" tires or may upgrade to

(RD2) 20" chrome wheels with either (RC7) or

(QSS) 20" tires. With (L86) 6.2L EcoTec3 V8

engine, requires (RD2) 20" chrome wheels

with (QSS) 20" tires. Not available with (Z71)

Off-Road Suspension Package.

 

They put in heavier rear springs and the larger axle make for a larger GRAWR - There is no mention of increased Payload or GVWR - just that the rear axle can handle more weight.

 

C5Z GVWR, 7200 lbs. (3266 kg)

All Trim Levels Requires 4WD models and (L83) 5.3L

EcoTec3 V8 engine or (L86) 6.2L EcoTec3 V8

engine. Required with (NHT) Max Trailering

Package on 2WD or 4WD models.

 

The Payload varies by cab and bed size but is around 2000 lbs (+/-200lbs)

[nomadicdogg]

I am as well. I have never been a Goodyear fan anyways, so the slicks will be coming off and traded for a true all terrain tire.

do you know what your going with?

[full_throttle]

Gping to go with Toyo AT II tires. Great tires and they wore really well on my 2011 dodge cummins. Just not sure if i will do a level kit or not yet, i want to see the truck first.

[TxTruckMan]

Actually I believe that there is 2200lbs difference in load ratings / towing ability.

No. Towing varies considerabley between models and gears, but not payload. There is only about 150 lb difference between vehicle payload limits, and generally the 6.2L has the lowest (even less than 4.3L) due to the additional weight of the 6.2L engine.

 

Engine CC Payload

4.3L 1875 lbs

5.3L 1947 lbs

6.2L 1797 lbs

 

Rear Axle Weight Rating:

Standard - 3950 lbs

3.73 Axle - 4100 lbs

 

P metric tires are fine for these trucks.

[full_throttle]

No. Towing varies considerabley between models and gears, but not payload. There is only about 150 lb difference between vehicle payload limits, and generally the 6.2L has the lowest (even less than 4.3L) due to the additional weight of the 6.2L engine.

 

Engine CC Payload

4.3L 1875 lbs

5.3L 1947 lbs

6.2L 1797 lbs

 

Rear Axle Weight Rating:

Standard - 3950 lbs

3.73 Axle - 4100 lbs

 

P metric tires are fine for these trucks.

I stand corrected, however the towing abilities do vary close to 2200lbs.

[newdude]

 

The trans cooler is NOT standard for Non NHT trucks, MotoMedic does not have the cooler

 

 

Auxiliary rans cooler is standard on 5.3 equipped trucks with or without NHT. Trucks without aux. cooler still have the regular cooler (part of the radiator). Max tow has an enhanced cooling radiator over the non NHT trucks.

 

Aux cooler is mounted at the top of the AC Condensor on K2XX trucks, not remote mounted in front of everything on the GMT-900 and GMT-800 trucks. .

 

Main cooler line feeds to the bottom left of the radiator, then a second pipe goes from the top left around to the aux. cooler at the top of the condensor. Then from the top right, the aux. outlet goes to a connection point where it connects to the return to the transmission. Four pipes make the system. The two from the trans are serviced as a pair like the GMT-900 trucks. Then there are two seperate ones to the aux.

[Jon A]

Aux Engine Oil Cooler is also standard. A lot of the stuff you had to add aftermarket in the old days already comes standard on these things.

[white1500]

Is the aux trans oil cooler on the k2's integrated into the radiator or standalone?

[newdude]

Is the aux trans oil cooler on the k2's integrated into the radiator or standalone?

 

Aux cooler is part of the condensor, the top 1/4 of it or so.

[white1500]

So its practically just like on mine. I don't know why they can't provide a proper unit that's fully independent. I suppose that it's better than nothing.

[newdude]

So its practically just like on mine. I don't know why they can't provide a proper unit that's fully independent. I suppose that it's better than nothing.

 

....well, the auxiliary is independent to the primary cooler which is part of the radiator. Non aux. cooler trucks are the same as old where the trans lines go to the radiator and back to the trans. The 2013 and prior trucks with aux cooler have a remote mounted aux cooler in front of the condensor, at the bottom of the grille in front of the cooler opening in the bumper. Line from the trans, goes to the radiator, radiator to aux cooler, aux cooler back to the trans. Still the same way today.