TopGear8

iTrader: (3)

Hey, i was just installing some new brake pads for my rx8. it has 18x8 wheels on it, their aftermarket not stock.
anyways, my problem is, the new pads were alot thicker, i got them on and thought everything was fine, i put the wheel back on, then spun the wheel, and the inside of the wheel spoke rubbed on the caliper. i didnt have this problem before because the pad was so thin. Is there a way to fix this?

expo1

new pads cannot cause the wheel to rub on the caliper. Check your work over again. Did you replace the all the shims and guides? Correctly tighten the caliper bolt. New pads means you would of had to push the piston back into the caliper, how did you do this? What I am getting that that brand new, correct pads should not cause this.

StealthTL

iTrader: (1)

Could happen, the caliper slides out quite a ways, and if the wheels are too small you got trouble......

Are the pads genuine Mazda?

S

SouthFL

Seems like wheel offset issues. What measurement offset is the wheel? It would say on the back of the wheel, labelled/stamped ET.

TopGear8

iTrader: (3)

The offset is 42mm. the reason the wheel rubbed was because the new pad made the caliper stick out farther, the pad was installed correctly and everything.

i used a c-clamp to push the piston back into the caliper.

StealthTL

iTrader: (1)

The offset measurement is only good at the hub, the back of the spokes can angle radically, we found this quite a lot when searching for a 17" wheel to carry snow tires.

S

TopGear8

iTrader: (3)

right now what i did is just put the new pad in on the inside of the rotor. and the old one on the outside. when the new one wears down a little bit, i plan on putting it on the outside, and the other new one that has not been used yet on the inside of the rotor. because the thickness of the brake pad on the inside does not effect how far the caliper sticks out..Is this a good idea?

swoope

iTrader: (5)

no,

and get the to a brake shop..

beers

TopGear8

iTrader: (3)

Ok well i just got wheel spacers. i am going to put them on before i put the wheel on and it will give me enough clearance. is there a downside to wheel spacers?

TopGear8

iTrader: (3)

Bump....^^^^

StealthTL

iTrader: (1)

Put them on then find some nasty speedbumps, see if the tires contact the body.

S

expo1

I am not trying to be a search ****, but there were too many threads to pick from. Do a title only search for 'spacers' and you will find a few on the subject.

Razz1

ahh.. not only whay stealth said but the extra weight is a disadvantage.