Cant get front tires off

https://www.youtube.com/watch?v=Z7Yw09PDFms

You have water in the brake system, it boils and applies the brakes.
Different size tires will set a trouble code, but not apply brakes.

yes as long as the rim is a 15 inch rim what matters is the diameter not the width of the rim however you want to match the size of you tires as closely as possible as it will cause abnormal wear on your tires, brakes , and traction control to name a few if you cant match all four at least make sure to match the two in the front and try to keep smaller tires to the front and larger tires to the back

Hi
It cant be leaking from the tyre, more likely the rubber hose, if you get under it and get someone to push the brake pedal you should see for certain where it is coming from.
Do not drive the car with it leaking or you risk losing brakes completely

just a suggestion it is possible that the pull could also be a tire pull or a flex line that is collapsed and this could also give you a pull

1999 Buick LeSabre Custom Front and Rear Tires P205/70R15
1999 Buick LeSabre Limited Front and Rear Tires P205/70R15
1999 Buick LeSabre PP (*) Front and Rear Tires P215/60R16

(*) PP = Performance Package

Other details can find in the Buick-Lesabre-Owners-Manual

Hope helps (remember rated and comment this).

remove the tire, then caliper which is held on by two bolts, then remove the brake line. After installing the new one it is required to bleed the brakes

There are no "tire bushings". There is a complete front wheel bearing assembly that if bad, will need to be replaced. There are also no lube fittings on any of these assembly's. You need to remove the entire brake assembly, rotors, calipers, and caliper mount just to get to the nut for the front wheel bearing. Then you have to take cotter pin out of the main nut on the end of the axle, and take off the nut locking nut, you will need a 32mm socket, (if memory serves me correctly) to take the axle nut off. Then there will be 3 bolts on the back side of the axle housing that will need to come out, unplug your electronic brake wire, and the wheel bearing should fall right out.

Run the air pressure in the front tires at 40 lbs pressure.
This may make it easier to steer.
This will cause the tires to wear a little faster in the center.

Have the front end steering and suspension components checked for binding or seized parts.

here is procedure

Section 04-01: Suspension and Wheel Hubs, Front 1996 Taurus, Sable Workshop Manual
REMOVAL AND INSTALLATION Wheel Hub Bolt Removal

1. Raise vehicle on hoist.
   

1. Remove wheel and tire assembly. Refer to Section 04-04 .
   

1. Remove disc brake caliper (2B120), and front disc brake rotor (1125). Refer to Section 06-03 .
   

Brake Shoe and Lining Removal

1. Remove brake master cylinder filler cap (2162). Check fluid level in brake master cylinder reservoir (2K478). Remove brake fluid until brake master cylinder reservoir is half full. Discard removed fluid.
   

1. Raise vehicle on hoist. Refer to Section 00-02 .
   

1. Remove wheel and tire assembly from front disc brake rotor mounting face. Use care to avoid damage or interference with disc brake caliper (2B120), front disc brake rotor shield (2K004) or front wheel knuckle (3K185).
   

1. Remove rear brake pin retainers (2N386). ( I think it is a T 40 torx bit you need)
   

1. NOTE: It is not necessary to disconnect hydraulic connections.
   
   Lift disc brake caliper from front disc brake caliper anchor plate (2B292) and front disc brake rotor (1125). Do not pry directly against metal caliper piston or damage will occur.
   

1. Position disc brake caliper out of the way and support with wire to avoid damaging the disc brake caliper and front brake hose (2078).
   

1. Remove outer brake shoe and lining (2001) assembly from front disc brake caliper anchor plate.
   

1. Remove inner brake shoe and lining assembly.
   

1. Position lug bolt (1107) to clear front wheel knuckle (3K185).
   

1. Remove lug bolt from wheel hub (1104).
   
   
   
   

Installation

1. Install lug bolt into wheel hub.
   

1. Using a lug nut (1012), seat wheel hub bolt into wheel hub.
   

1. Install front disc brake rotor and disc brake caliper. Refer to Section 06-03 .
   

1. Install wheel and tire assembly. Tighten lug nut to 115-142Nm (85-104 lb-ft).