I have a 2002 SC430
let me 1st explain about right pull on the highweay and on city streets, all streets and roads are "crowned" this means that the street is high in the center than on the sides for water drainage, so a slight pull is nothing to worry about, if u feel the you really need to apply left turn pressure to keep in a straight line then yes u have a problem, the 1st thing to do is have a 4 wheel alignment done, this is makes sure the front and rear wheels are "tracking " true, also have the tires rotated front to rear, you are due anyway, instruct the dealer to please road test the car after the alignment is done and the tires rotated to make sure the car doesn't pull to the right, also tell the dealer to make sure the steering wheel is centered for road crown as i explained above and that average road crown be considered in the alignment settings, then come in after the work is done and road test the car with a front end alignment technician to make sure the job was done righ, don't replace the tires, just rotate front to rear, if u follow the instructions to u and you pass this on to the dealer you will be a happy camper.