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I wonder why not disc brakes all the way around?


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Cost. That's probably it.

I like my 2011 Tacoma, but its three deficiencies are the braking power when pulling a trailer, the A/C needs a stouter fan motor, and the auto tranny needs a tow/haul/sport mode that delays shift points a bit in the upper gears.


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That question got asked by TFL Truck to one of the chief engineers when they debuted the most recent overhaul ('17 I think) and he gave some bullshit answer about them being better offroad because they're more sealed against the elements. The real answer is as JPro suggested, cost.

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I hear the transmissions are sealed as well.


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My guess would be cost as well. I've got an 11' and had an 03' before that. Front rotors on both were warped at 80k so I replaced. Now with 125k it is about ready for another set. I guess people keep buying them so why spend the money to retool the factory.

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If it ain't broke!!!


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yes seems dumb.......but......

our current '05 TURD w/auto.....166K miles still has OEM rear drums

front pads changed at 160K......yes auto trans is sealed.......thats why......

my '14 is a 6 sp MT.....do not tow with either.......78K miles


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What kind of gas mileage do you get with the 6 speed manual?


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I was told that the move to rear drums was because if you drive on gravel roads the grit that accumulates in the wheels will score your rotors rather quickly. On my 2003 GMC there are rear drum brakes and on the 1996 I had before that had rear discs. The rotors on my 1996 were scored badly every 20K or so. I drive 7 miles of gravel every time I leave my place. The 2003 has rear drums and they have over 40K on them and looked fine last time I checked.

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The last truck I had with rear drums was a Nissan Hardbody V6. Wore out multiple set of brake shoes and ruined a couple of sets of drums as a result of muddy conditions. Only real difference between rear drums and discs, is that once the mud gets into the drums, it stays there. At least with discs, they self clean a little easier. Witness the fact that pretty much all of the Side by Sides out there use discs on all four wheels.


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After road-tripping across Alaska with canoes atop of HDJ 81 toyota landcruisers, HJ 61 landcruisers, FZJ 80 landcruisers, all with solid front axles and full floating rear axles and disc brakes, I can say I've always felt buyers remorse for purchasing a new Tacoma. An HDJ 81 has a full floating rear axle and disc brakes with a torque-laden, fuel efficient 4 liter inline six diesel. Front and rear electronic locking differentials as options. You can buy them as Japanese imports to British Columbia and import them into the states.

V6's, no matter who the maker, are mini van engines that make no low end torque. It's the most uninspiring motor ever devised for a four wheel drive, especially in an auto. After experiencing a few of these imports that came from Japan, we certainly get the least inspiring, mundane of 4wd's. Any peon who gets excited over a Tacoma, hasn't lived.

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Cost is the most likely reason. That being said, drums work just fine. Especially since we are talking a mid sized pickup.

I really do get baffled at why people get hung up on rear drums. It's not a big deal, if it had discs, you probably would see a dramatic change in braking.

Front brakes are a different story.


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Originally Posted by whelennut
What kind of gas mileage do you get with the 6 speed manual?



was getting 20-21........with P rated Cooper AT3's........but

now switched to E rated......same size 265-75x16LT..Cooper ST Maxx.......

haven't really checked mpg....but know it dropped..some...oh well.......

the ST Maxx is a much better 3 ply side wall & heavier tire for my part of the world

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My 07 Taco still has OEM rear brakes at 203,000+ miles. I replaced front pads at 190,000 miles for the first time and honestly they could've gone a bit longer.


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Originally Posted by WoodrowFCall
Cost is the most likely reason. That being said, drums work just fine. Especially since we are talking a mid sized pickup.

I really do get baffled at why people get hung up on rear drums. It's not a big deal, if it had discs, you probably would see a dramatic change in braking.

Front brakes are a different story.


I have read where Discs were added from a 4 runner with less then stellar results

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Mileage ... I'm running 265-75R16 Toyo Open Country MTs on my 2014 crew cab TRD offroad w/ 6 speed manual. I've gotten near 17 mpg but not hit it for any extended time. The last 1000 mile interval I checked I only got 14.5. That sucks.

Brakes ... the reason I like rear disks is drums generally brake harder going forward than they do going backwards but disks brake the same going either direction. This can be a big deal if you have to back down a muddy hill you didn't quite get to the top of. Coming down with drums, you have only a small fraction of the stopping power, so all of your steering and most of your braking are on the front tires. This can be enough to break them loose and start an uncontrolled slide where rear disks would have taken up some of the braking load and allowed you to steer instead of slide.

Tom


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Here be dragons ...
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Originally Posted by T_O_M
Mileage ... I'm running 265-75R16 Toyo Open Country MTs on my 2014 crew cab TRD offroad w/ 6 speed manual. I've gotten near 17 mpg but not hit it for any extended time. The last 1000 mile interval I checked I only got 14.5. That sucks.

Brakes ... the reason I like rear disks is drums generally brake harder going forward than they do going backwards but disks brake the same going either direction. This can be a big deal if you have to back down a muddy hill you didn't quite get to the top of. Coming down with drums, you have only a small fraction of the stopping power, so all of your steering and most of your braking are on the front tires. This can be enough to break them loose and start an uncontrolled slide where rear disks would have taken up some of the braking load and allowed you to steer instead of slide.

Tom


I'm not sure how a drum can brake harder in one direction than the other. They use a dual piston cylinder to push out two brake shoes against the inside diameter of the drum. They might not brake as well, but I don't see how they are better in one direction than the other. I also don't buy the "breaking loose" bit at all. Rear drums will lock up a wheel fine. They might slide after locking. Have you actually had this happen and are 100% sure it wasn't just the tires sliding?

Not trying to start a fight, I'm genuinely interested as my experience with drums is different.


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Yes, definitely. I'm comparing 2 TJs, a '98 that had front disk rear drums and a '05 that had disks front and rear. The drums on the TJ were pretty feeble in reverse. Since I had the same thing happen, though without 4 wheel disks for comparison, on a couple of F150s, I assume it's the nature of the beast.

Tom


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