I need to replace the front rotors and pads on my 1992 Lexus LS400. What aftermarket rotors and pads do you recommend. What is the discard thickness of front and rear rotors on this model?

Hello there
From a kind chap on this page
http://buickforums.com/forums/threads/18395-Service-limits-for-brake-rotors

For a 2000 Buick LeSabre

FRONT BRAKE ROTORS:
Discard Thickness30.7 mm (1.209 in.)
Lateral Runout (New)0.06 mm (0.002 in.)
Minimum Thickness after Refinish31.08 mm (1.224 in.)
Rotor Diameter 15 inch Wheels (New)278.0 mm (10.9 in.)
Rotor Diameter 16 inch Wheels (New)303.0 mm (11.9 in.)
Rotor Thickness (New)32.20 mm (1.267 in.)
Thickness Variation (New)0.025 mm (0.001 in.)

I don't know the min thickness, but I have an outback just like yours and if there is a problem with uneven rotors it's usually cheaper and easier to buy aftermarket at NAPA auto or other supplier (shop around) and trash the old rotors. If the rotors can be turned then keep them for the next brake job and use them then. Outbacks are easy to do about 30 min a side rotor and pads after the wheel is off, just did mine.

Hi,
Most likely a brake caliper or line. Lines are fairly cheap, calipers cost about $75 a piece if you get them discount online. Novice mechanics can do either or both replacements. DOnt buy parts from a dealer, they are 40% higher than retail. A brake shop will run you in the range of $150 to replace the caliper and pads one one axle, about $300 on both rear (replace both is recommended). Mike

what is the question???? I will guess...please don't hammer my raiting for not answering the "right question" ...

So, if you are doing a break job, and you are wondering if the rotors need to be resurfaced or machined? okay, first thing you need to do is to take a micrometer and check the thickness of the rotor. There will be minimum machineable thicknesess. If your rotor is thinner than the minnimum allowable thickness, you will not be able to machine it, and it will have to be replaced. Looking at the year of your vehicle, when were the breaks last done on it? if it was quite a while ago...you might want to consider replacing the rotors as well. If the question is on how to replace the break pads, i can't realy help you too much there, i can tell you the very basics, but you kinda just have to see it. So if you get stuck, take one side apart at a time.... If you need help on doing the actual pad change, ask back. but the basics are that you have to unbolt the caliper (leave the braket on) and pull the pads out while making sure to keep and eye on how the little springs/clips go in (if you have them, not all vehicles do). Also, caution on which break pads you put where. Some types are specific on which side of the rotor they have to be on. If this is the case, they "usually" give you instructions....Best of luck

Replace rotors and pads, have your breaks bleed. This should fix the problem.

Rear thickness 0.591 inch minimum
Front thickness 1.024 inch minimum

Need to replace struts.

The brake wear indicator is a small metal stone-like sensor that attaches to the brake pad. Once the pad wears down to a certain level, it begins wearing into the sensor, breaking the circuit open.


Once the light has come on, the appropriate sensor (front or rear) must be replaced to return functionality.
Factory brake pads usually come with new sensors. Aftermarkets do not, and often have no provisions for attaching them either.

Alternately, you can bypass the brake level sensors by splicing the two wires for the sensor together. You will no longer have brake level warnings if you do this however.

you need a new one mines does that it only displays when its extremely hot outside. I have the same car exact year and everything

there is many kind of brake system of ur truck here i will send u everything about the brake and i hope its help

Rear Brakes JC3

Rotor Discard Thickness* 18.50 mm/0.728 in Rotor Minimum Allowable Thickness After Refinish 19.0 mm/0.748 in Rotor Thickness (new) 20.0 mm/0.787 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring 1.50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
Rear Brakes JC4

Rotor Discard Thickness* 28.50 mm/1.122 in Rotor Minimum Allowable Thickness After Refinish 29.0 mm/1.142 in Rotor Thickness (new) 30.0 mm/1.181 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring1 .50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
Rear Brakes JH2

Rotor Discard Thickness* 28.50 mm/1.122 in Rotor Minimum Allowable Thickness After Refinish 29.0 mm/1.142 in Rotor Thickness (new) 30.0 mm/1.181 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring 1.50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
Rear Brakes JH6

Rotor Discard Thickness* 27.50 mm/1.082 in Rotor Minimum Allowable Thickness After Refinish 28.0 mm/1.102 in Rotor Thickness (new) 29.0 mm/1.141 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring 1.50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
Rear Brakes JH7

Rotor Discard Thickness* 28.5 mm/1.122 in Rotor Minimum Allowable Thickness After Refinish 29.0 mm/1.142 in Rotor Thickness (new) 30.0 mm/1.181 in Rotor Maximum Allowable Lateral Runout 0.05 mm/0.002 in Rotor Maximum Allowable Scoring 1.50 mm/0.059 in Rotor Maximum Allowable Thickness Variation 0.025 mm/0.001 in
* All brake rotors have a discard dimension cast into them. Replace any rotor that does not meet this Specification. After refinishing the rotor, replace any rotor that does not meet the minimum or discard thickness specifications.