Ricydluu

Hi Guys,
My front break is worn out and I've talked to an independent mechanic. He said the front break is worn out and it needs to be replaced. But he said that its best to replace both the rotors and break pads at once. He said that with the F sport model, resurfacing the rotors will still make breaking noise even if I replace the pads. I'd like to hear your thoughts. The car is at 43k miles and 2015 model. Any help is welcome.

Thanks!

SikhSipahi

Replace both

MX73

I don't like to pad slap onto a rotor that hasn't been resurfaced. Being an F-Sport, I would do the pads and rotors at the same time. The rotors are probably down to its min thickness.

*Brake

jkonquer

It depends how much rotors you have left on them. I recently changed the pads on my 2014 is350 f sport with 18k miles and the rotors were fine and no squeaks. You should resurface them but not needed if they are not warped.

specONE

iTrader: (3)

*Brake

its spelled BRAKE! not Break

Ricydluu

LOLOLOL my bad. I was in a hurry when i typed that haha.

Jay89

B R A K E

OK now that that's out of my system, replace both. Unless your rotors have more than 50% of its original wear thickness left, and less than 0.0004" runout.

My own general rule of thumb is that if it's safety related, I don't cheap out. Replace with good quality new parts, no point in causing potential issues.

E46CT

43k is kind of a lot for these rotors i'd imagine. replace them.

timcole421

I replaced f-sport pads with the akebono pro-act pads. I did not replace or turn the rotors. 4k miles since the swap, no vibrations or any other issues. Massive improvement in brake dust and wear without a noticeable loss in braking power. Took a couple hours and cost was in the neighborhood of $100. Highly recommended.

Dizordered

+1 on this. I did the same with my IS350. Just swapped with Akebono ProAct bought on Amazon for about 80$ CAD. Swapped it myself and did the brake-in thing where you warm them up then brake strongly a few times. 5000km later... no issues!

Before deciding not to do anything with the rotor, I measured its thickness and it wasn’t even down 1mm. So I decided to stay with the same rotors. No grooves, not warped... so why change?

nathantse

I have a similar questions as OP,

I went in for my 25k service, my tech friend says my front rotors are beginning to lip at the outer edges. Says to recommend changing around 30k miles.

Although the rear rotors and all pads are fine, I heard no speaks or vibrations thus far. And my stock tires still have 70% tread left lol.

Is it a serious issue or can cause harm driving with a lipped front rotor? I do a lot of hwy drive and do not break as often or hard anyways.

MX73

No issues whatsoever. The pads do not make contact with the lip. You won’t be able to resurface the rotors with an outer lip. I would replace the front rotors when the front pads wears down.

nathantse

Ahh I see. Sounds good, its such a small issue I wouldn't expect a large impact of the driving experience.

But curious, whats the point of resurfacing a rotor when buying a brand new one is just a few more $$.

MX73

It’s preference. Some places charge $10-20 per rotors to resurface. That’s fine if you’re still within specs. For me, since I already have everything off, I’ll just replace them with new parts.

louczar

+1 I too will not replace rotors unless they have damage or are below the minimum thickness. No need to throw away money on parts when not needed.