What is the minimum thickness on the front rotors on a 2005 dodge caravan.also what is the run off limit and whats the difference between the two?

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.)

Auto Parts Stores have books for that spec

IT IS INBOSSED ON ROTOR IF YOU LOOK FOR IT

ON most disc rotors the minimum thickness is cast into the body of the rotor and will read min thickness and a dimension. The dimension is also available in the workshop manuals and from the service department of your vehicle. Do not be surprised if you find that your dimensions are almost at do not machine limits as original rotors are not much thicker than the low limit.

The minimum rotor specs is stamped on the rotor and is different with each manufacture which sets the standard. Measure the thickness with a micro-meter. Replace the rotor if it is below or near the minimum or has been grooved by worn pads.

All are different, on the back side of the brake rotor , will have a stamp with (MIN) and some number after it the will be the minimum spec thickness for the brake rotor.

Brake Disc (Rotor) REMOVAL & INSTALLATION

1. Raise and safely support the front of the truck with jackstands. Remove the front wheel.
2. Remove the caliper assembly and support it to the frame with a piece of wire without disconnecting the brake fluid hose.
3. Remove the hub and rotor assembly.
4. Install the rotor in the reverse order of removal, and adjust the wheel bearing as outlined in Section 1.

INSPECTION If the rotor is deeply scarred or has shallow cracks, it may be refinished on a disc brake rotor lathe. Also, if the lateral run-out exceeds 0.010 in. (0.25mm) within a 6 in. (152mm) radius when measured with a dial indicator, with the stylus 1 in. (25mm) in from the edge of the rotor, the rotor should be refinished or replaced. A maximum of 0.020 in. (0.5mm) of material may be removed equally from each friction surface of the rotor. If the damage cannot be corrected when the rotor has been machined to the minimum thickness shown on the rotor, it should be replaced. The finished braking surfaces of the rotor must be parallel within 0.007 in. (0.178mm) and lateral run-out must not be more than 0.003 in. (0.076mm) on the inboard surface in a 5 in. (127mm) radius. Fig. 1: Use a dial indicator and micrometer to check the rotor for run-out and thickness
Fig. 2: A correct final rotor finish
Fig. 3: Location of the rotor minimum thickness marking
Fig. 4: Exploded view of a rotor mounting to the hub — 4WD Dakota models shown

Its minimum thickness must be 22mm but the specified size is 25.4mm which would fit in perfectly

if you have to ask that question you should replace them

hi,depends your chassis number,if 210.055 your front disc thickness is 28mm,wear limit was 25.4mm,if 210.004,010,020,035,037 your disc is 25 mm. wear limit is 22.4mm,ty