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On the topic of brake upgrades I happened to stumble on a facebook post where people are bolting on 08+ rotors and calipers. No special modification required, however i would not be able to use my stock 16" wheels anymore. I'd be stuck with the 17s that I plan on running most of the time anyway. These are over an inch bigger and may even have clearance issues on the 17s. 57485502_10218924942811801_5797140946818695168_n.jpg
Last edited by JoeliusZ28; April 14th, 2019, 08:29 PM.
My main reservation for this was is I was planning on keeping the stock 16s with some highway michelins on them for long haul towing trips. And with this brake upgrade I wouldn't be able to do that. My 17" 285 mud terrains are very close to DOUBLE the weight of the stock 16" 265s. and theyre barely an inch bigger in height and width. I didn;t realize they were going to weigh that much more when i ordered them.
I could always get a set of newer stock 17s and do the same though.... just going to be more $ in tires.
Last edited by JoeliusZ28; April 15th, 2019, 03:41 PM.
I found that GMT800s increased the size of the front brakes optionally in 04 and unanimously in 05, hence 17" wheels becoming standard. In 04 I think you only got the bigger wheels and brakes with the tow package. I'm not sure if the upgraded 800 brakes are the same as the 900s i posted above. Kevin, does your 04 have the bigger brakes along with the hydroboost?
*IVH is not the definitive source of GM Vehicle RPO information and is intended for service reference only. Should there be any questions about the vehicle's original build or RPO information please refer to the original vehicle invoice or window sticker.
1SL - OFF-ROAD PREFERRED EQUIP. GRP: * AM/FM STEREO CD WITH RDS * FRONT HIGH BACK BUCKET SEATS * IN DASH 6 CD PLAYER * REAR SEAT AUDIO CONTROLS * BOSE PREMIUM SPEAKERS * IST ROW LEATHER SEATING SURFACES * 2ND ROW SEATS LEATHER APPOINTED * ONSTAR SYSTEM INCLUDES 1YR SAFE & SOUND * STEERING WHL MOUNTED CONTROLS * WHEEL FLARES * LOCKING DIFFERENTIAL * SKID PLATES * 17X7.5 ALUMINUM WHEELS * P265/70R17 ON-OFF ROAD TIRES * PWR FOLD AND ADJUST HEATED OUTSIDE MIRROR WITH TURN SIG AND DRIVER SIDE AUTO DIMMING * Z71 SUSPENSION * FRONT AIR DAM * TUBULAR ASSIST STEPS * LUGGAGE RACK WITH RR ROLLERS * FOG LAMPS * CARGO NET * CARGO SHADE * CARGO AREA MAT * TRAILERING PACKAGE * HIGH CAPACITY AIR FILTER OPTION PACKAGE 11
No that I can tell, but I will check it out in person to see if there's a difference. Yukon is rolling on 16's (it's an SLT). The Suburban is 17's due to Z71 package.
They went to 17" wheels with bigger front rotors in '03 or '04, when they went back to drums on the rear. The caliper bracket and rotor from those fit on the older GMT800 trucks.
I find the brakes on my '01 to be fine though, when they're working right. A lot of the poor pedal feel comes from bad calipers in the rear. Lately, my pedal feel is all over the place, so I think my vac booster may be iffy. Otherwise, sometimes I swear it feels like the brakes are dragging slightly, so I've also theorized that the MC isn't bleeding off pressure completely when the pedal is released. Aside from feeling like they're dragging, the brake pedal is usually low (i.e. excessive pedal travel) when it's in that "mood". Yet the pedal isn't really soft or spongy. Other days, the pedal feel is perfect. Seems more like an intermittent vac leak, but I dunno.
When I bought my T/A, I towed it home on a Uhaul flat bed with this truck. I imagine that was a 4500 lbs load. Stopping and going was no problem at all. I have the front cranked 2" though, and the stock springs squatted a lot, so it was very nose high. Add in that it was exceptionally windy, and I was forced to use back roads. It was just too twitchy for high speeds. BUT, like I said, stopping and starting was absolutely fine.
FWIW, my '01 was rated to tow 8,600lbs with the 3.73 gears. I'd do the hydroboost conversion
2000 Pontiac Trans Am WS6 M6 | C4 ZR1 Wheels | Borla Cat-back
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They went to 17" wheels with bigger front rotors in '03 or '04, when they went back to drums on the rear. The caliper bracket and rotor from those fit on the older GMT800 trucks.
I find the brakes on my '01 to be fine though, when they're working right. A lot of the poor pedal feel comes from bad calipers in the rear. Lately, my pedal feel is all over the place, so I think my vac booster may be iffy. Otherwise, sometimes I swear it feels like the brakes are dragging slightly, so I've also theorized that the MC isn't bleeding off pressure completely when the pedal is released. Aside from feeling like they're dragging, the brake pedal is usually low (i.e. excessive pedal travel) when it's in that "mood". Yet the pedal isn't really soft or spongy. Other days, the pedal feel is perfect. Seems more like an intermittent vac leak, but I dunno.
When I bought my T/A, I towed it home on a Uhaul flat bed with this truck. I imagine that was a 4500 lbs load. Stopping and going was no problem at all. I have the front cranked 2" though, and the stock springs squatted a lot, so it was very nose high. Add in that it was exceptionally windy, and I was forced to use back roads. It was just too twitchy for high speeds. BUT, like I said, stopping and starting was absolutely fine.
FWIW, my '01 was rated to tow 8,600lbs with the 3.73 gears. I'd do the hydroboost conversion
Thats great feedback, thanks! My brakes are in perfect working order however I can tell they have to work harder just by having my heavier mud tires on it. Otherwise a similar setup... 3.73 gears, cranked front, and an add-a-leaf in the rear. My end goal is to have a truck that can tow a car hauler on the highway for long distances and not be sketchy.
Yeah, I have 10 ply BFG All Terrains on mine. That doesn't help either. I hate those tires too. With as bad as the grip is in rain and snow with these, I should've just got the mud tires I wanted.
2000 Pontiac Trans Am WS6 M6 | C4 ZR1 Wheels | Borla Cat-back
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Yeah, I have 10 ply BFG All Terrains on mine. That doesn't help either. I hate those tires too. With as bad as the grip is in rain and snow with these, I should've just got the mud tires I wanted.
Interesting what size? I had 285s on my last half ton and I loved them, but that is a tire that is very sensitive to being sized correctly. Too narrow they burn up really fast and too wide they will have zero grip in snow/rain. They also don't grip well when they wear out. But a fresh set of correctly sized BFG ATs are some of the best tires ive ever had.
Honestly i only changed to mud tires for two reasons.... they look better AND they pick up way less rocks.
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