GMT400 suburban questions

rayra

Expedition Leader
I've got the snowflakes on both our Z71s, 17s. So is the original spare steel on the Tahoe and I bought / chose the factory steel 17 for my '02 Sub, didn't have a spare when I bought it.
I looked through the rockauto and other online parts store listings and didn't find any other rotor sizes listed for the 1500 vehicles, regardless of trim packages.

Peasy don't take my post for gospel, go ask at a dealer parts counter, or have a rim test fit at a shop, before you plunk down the money.
 

peasy

New member
I've got the snowflakes on both our Z71s, 17s. So is the original spare steel on the Tahoe and I bought / chose the factory steel 17 for my '02 Sub, didn't have a spare when I bought it.
I looked through the rockauto and other online parts store listings and didn't find any other rotor sizes listed for the 1500 vehicles, regardless of trim packages.

Peasy don't take my post for gospel, go ask at a dealer parts counter, or have a rim test fit at a shop, before you plunk down the money.
A quick google leading to tirerack shows:
Original Equipment Sizes for:
2002 Chevrolet Suburban 2500 4WD
245/75 r16
Im assuming the 17's are just the trend towards low profile tires/high profile rims that has happened? I will definately check this out for sure with a test rim if the one I buy doesn't have 16s stock.

I am terrible with these tire sizes; anyone know what oversized tire I could run without it getting wider and rubbing? I've read the skinnier tires do better in mud/snow and I don't really see sand up here, and I like the look of taller/skinnier tires anyways.

looks like 245/85 and 255/85 would be quite tall and not so wide? Still not so sure though. If I can stick with whatever's stock on the truck or the cheap stock steel/alloy replacements that'd be great.
 

rayra

Expedition Leader
I'm fairly certain 16s were base equipment on the LS and LT models '00-'06, with the 17s available as an option and as part of the Z71 setup.
The later generations were similarly mixed and moved up in sizes, too, 17"-18".
 

Martinjmpr

Wiffleball Batter
I'm fairly certain 16s were base equipment on the LS and LT models '00-'06, with the 17s available as an option and as part of the Z71 setup.
The later generations were similarly mixed and moved up in sizes, too, 17"-18".
.
That certainly may be the case. My '04 has just about every option available for that model year according to the RPO codes in the glove box. The only options it doesn't have are autoride, sunroof, rear bucket seats and the DVD entertainment system - none of which I wanted anyway.
.
It's been a long time since I shopped a new vehicle but my guess is that most of these options came in "packages", i.e. interior package, premium sound package, and probably the 17's were part of a "premium wheel" package. That would probably explain the spare tire being a 16" as well.
 

justcuz

Explorer
My 12" of suspension travel was referring to IFS. But an Excursion with F350 springs will probably have 12" of travel if you count full droop.
Personally, if I was in the market for a GMT 400 or 800 Suburban, I'd be looking for a 3/4 ton for 3 reasons.
1. I am retired and I don't put 15,000 annual miles on my vehicles any more.
2. 3/4 tons have heavier, more durable drivetrain.
3. 3/4 tons are usually cheaper than 1\2 tons because everyone is afraid of the bigger engines being less fuel efficient.
I've gotten 17.8 mpg out of my 2000 K1500 5.3, 3.73 geared Suburban. It was in Utah, heading south, at over 75 mph!
I borrowed my friends 2003 2wd 5.3 Suburban with 4.11 gears and it got over 20 mpg going to the Monterey Bay and back.
These LS engines don't mind higher RPMs, and seem to get better mileage with lower gears.
 

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