StewHatch

I have been offered a NIB set of M030 front brake rotors for my '93. I need new rotors, so why not upgrade? Will these bolt on, or will I need to buy additional parts to make them fit? Will my stock calipers work with these rotors? Also, what are they worth? Last question - I assume that these rotors will require the M030 front brake pads, is that correct? I'd appreciate any feedback guys. Stew

RajDatta

Stew, their worth depends if they are actual 968 M030 rotors (cast drilled) or just standard 951S rotors (solid). Both rotors have same dimensions but only 968 M030 are cast drilled. They are very pricey. Last time I checked, they were over $230 each.
They will not fit your stock setup. You need to swap your calipers to M030 or 928 S4 calipers and also need adapters to mount the calipers to standard spindles. Your other choice is to swap spindles/hubs but they go for close to $1k used.
So, in a nutshell they will not do you much good unless you make the appropriate changes to make them work.
Raj

FRporscheman

You'd be better off buying a set of rotors for non-m030. Unless you were planning on eventually upgrading your brakes. Then you could buy these and start collecting the other parts.

I'd recommend the brake caliper adapters instead of m030 spindles. They're just so expensive and hard to find, and you probably won't ever care that the spindle is thicker or stronger, and the stock spindle is plenty strong anyway.

Lord_Galva

Where can you find this adapter for the spindles?
Also would it be cheaper to switch to M030 brakes or Big Reds?

RajDatta

Big reds are much cheaper because they sold a ton of those. When it was time for me to do some maintainence on the M030 coupe, I opted to switch to Big reds. It was cheaper in the long run and I had a brand new set of brakes.
There are a lot of places that sell adapters. Paragon sells them for sure.
Raj

Lord_Galva

I think Big Reds look good too.
But if you want to participate in club racing I guess M030's are the way to go.

luckett

Depends on which club and which class.

FRporscheman

Where do 928S4 brakes fit in? Are those the same as 951S m030 brakes, or 968 m030 brakes? And I assume they are not a direct fit for standard 968.

RajDatta

928S4, 951S and 968 M030 are all same calipers.
Raj

Jim Child

That's true. If you want to race in PCA's stock class, then you don't want the Big Reds. They count as a prepared mod and bump you up to the next class, but they won't enable you to run the quicker lap times you need to be competitive in that class. Similarly, in 944 Supercup, cars with prepared mods as defined by PCA are forced to carry extra weight. The M030 brakes were an option for the 968, so they can be retrofitted to any 968 without counting as a prepared mod. If you're racing with any other organization that looks at mods to make the class determination then you may run in to the same problem. Make sure you look closely at the rules before spending $$$ on any mods in that case.

If on the other hand you're racing with NASA GTS or an organization with similar rules, then you'd be better off with the Big Reds. GTS only looks at the car's lbs/hp ratio to determine class so mods are unlimited. Big reds are cheaper, easier to source, and offer slightly more fade resistance than the M030 brakes, so they're a no brainer in that kind of class.

Lord_Galva

I guess it depends on how much money you want to spend on your car. But better brakes are always a plus.

luckett

But only if you have enough grip in the tires to take advantage of the extra braking capacity.

PorscheDude1

<<---- L8B8kR

Lord_Galva

Khumo's baby!

StewHatch

I've heard from several sources to stay away from Kuhmos. I believed them b/c they were cheap to buy. Is that info unfounded? I need new rear tires for my car and I always understood that it's best to keep the same tires on all four corners (balance?). I have new Dunlop SP8000's on the front and noticed that they don't sell this model any longer. If I am buying (four??) new tires -16" - what would be a good buy? I hated the Avons, and the Michelin Pilot Sports were awesome, but they stopped making them in 16" as well. Perhaps it's time to step up to 17". Anyone selling rims in that size with reasonable rubber already mounted that'll bolt on to my 968?