[Apex Rex]

I'm looking at upgrading to the M030 brakes for my non-M030 968. I was just wondering if the stock 16x7" wheels will fit over the M030 brakes? The car is a "dual-purpose" car, and will see about 16 track days and some auto-x's this season.



I have an inclination to think that they will, as the 944 Turbo S's and Turbo Cup's ran with 16's, but I am unsure of the width they were running.



Any advice is certainly appreciated!

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[RS Barn]

The 951TS was the first car to run with S4 Calipers. The wheels were 7.5x16 fordged allows to acomodate the larger calipers. The 968 16" wheels will not work

Pete

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[968gene]

I have a set of the above mentioned TS wheels for sale...

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[Apex Rex]

[quote name='RS Barn' post='32024' date='Mar 6 2007, 11:06 PM']The 951TS was the first car to run with S4 Calipers. The wheels were 7.5x16 fordged allows to acomodate the larger calipers. The 968 16" wheels will not work

Pete[/quote]



Thanks for the info!





PM sent gene

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[Apex Rex]

Is it the width of the wheel that does not allow the M030's to be used with the stock 16" 968 wheels? Or is it the diameter? If I ran 16x8's up front, those should clear the M030's I would assume...

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[Bart]

[quote name='Apex Rex' post='32050' date='Mar 7 2007, 01:36 PM']Is it the width of the wheel that does not allow the M030's to be used with the stock 16" 968 wheels? Or is it the diameter? If I ran 16x8's up front, those should clear the M030's I would assume...[/quote]



I was thinking big reds when I responded. Sorry.

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[wjk_glynn]

[quote name='RS Barn' post='32024' date='Mar 6 2007, 09:06 PM']The 951TS was the first car to run with S4 Calipers. The wheels were 7.5x16 fordged allows to acomodate the larger calipers. The 968 16" wheels will not work

Pete[/quote]



Hi Pete,



From what I understand, the 951S did have 7" wheels, though the 1990 951 models had 7.5" front rims. I'm in Ireland at the moment (on vacation for Paddy's Day) and so I don't have all my resources to hand, but my understanding of the history of the 951S and later models was:



1988 951S

F: 7x16 ET52.3-mm, R: 9x16 ET52.3-mm



1989 951

F: 7x16 ET65-mm, R: 9x16 ET60-mm

F: 7x16 ET65-mm, R: 8x16 ET52.3-mm (928 flatdish option?)



1990 951

F: 7.5x16 ET65-mm, R: 9x16 ET52.3-mm



1991 951 & 951 Cabriolet (not available in the US)

???



But as I mentioned above, I don't have all data to hand so I wouldn't bet the farm on what I listed above. When I get back, I'll try to dig out specific sources and confirm the data.



Karl.

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[G68]

I have a factory M030 car. I have a set of factory 16's, and they fit fine.



Pete, are you sure?



Graham

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[bob blackwell]

I put the 1987 928 S4 front brakes on my car last year (same as the M030 option on our 968) and one set of wheels I am using for daily driving is early 928 16 inch wheels. They fit fine. Bob Blackwell.

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[333pg333]

Correct me if I'm wrong but aren't your DE days basically open laps for up to 15-20mins on the circuit? If so, and you are planning on doing 16 and some other events, I would look to put on the Big Blacks if possible although you may have to go up in wheel size? The Mo30 or S4 brakes are good but it's a very good option to go up to the next level again and for not much of a weight increase ( 4lbs per corner ), you get an extra 40%+ of pad area. Just an idea and one I'm doing.

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[Apex Rex]

[quote name='333pg333' post='32415' date='Mar 14 2007, 01:21 AM']Correct me if I'm wrong but aren't your DE days basically open laps for up to 15-20mins on the circuit? If so, and you are planning on doing 16 and some other events, I would look to put on the Big Blacks if possible although you may have to go up in wheel size? The Mo30 or S4 brakes are good but it's a very good option to go up to the next level again and for not much of a weight increase ( 4lbs per corner ), you get an extra 40%+ of pad area. Just an idea and one I'm doing.[/quote]



I'm looking down the line into club racing, and PCA stock class rules will not allow me to go with anything larger than the M030's.



I would also like to keep the 16s for now, as tires are cheaper and I'm not looking for that last tenth right now.

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[Apex Rex]

Anyone know the difference between the M030 and standard hubs for our cars? I need at least 1 new one, and am curious as to the differences.

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[Dave]

I believe one needs the M030 steering knuckle (spindle) to match the M030 hub. That said, I've never had them appart and side by side.



You do know you can buy billet aluminum units made by Racers Edge too. They come in std and M030 and are available through your fine sponsors on this site.

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[Apex Rex]

[quote name='Dave' post='32819' date='Mar 19 2007, 09:29 PM']You do know you can buy billet aluminum units made by Racers Edge too. They come in std and M030 and are available through your fine sponsors on this site.[/quote]



Those are really nice units! Might be a little steep at $750 for the pair, but I guess I'd never have to worry about them cracking. They do include all new races, seals, and bearings, so they might be one option to certainly look into.



Thanks Dave!

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[vnarma]

Brian,

I have a set of new in box front rotors (Non-drilled) for the M030 brakes. Let me know if you are interested.

Reasonably priced!

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[Jim Child]

[quote name='Apex Rex' post='32834' date='Mar 20 2007, 02:51 PM']Those are really nice units! Might be a little steep at $750 for the pair, but I guess I'd never have to worry about them cracking. They do include all new races, seals, and bearings, so they might be one option to certainly look into.[/quote]



The standard M030 hubs will crack if you track the car. Its just a matter of when. I've personally cracked three of them. I now have the billet units on the car. Porsche wants around $700 each for the OEM replacements, so $750 for a pair of billet units is really a bargain.

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[Mike in NJ]

[quote name='Dave' post='32819' date='Mar 19 2007, 10:29 PM']I believe one needs the M030 steering knuckle (spindle) to match the M030 hub.[/quote]

VERY expensive!

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[Apex Rex]

[quote name='Jim Child' post='32837' date='Mar 20 2007, 11:19 AM']The standard M030 hubs will crack if you track the car. Its just a matter of when. I've personally cracked three of them. I now have the billet units on the car. Porsche wants around $700 each for the OEM replacements, so $750 for a pair of billet units is really a bargain.[/quote]



If you don't have a problem with running the billet units, then I don't think I will.



Thanks for all of the help everyone! Now I just need to figure out how to afford this on a college-kid budget... haha!



[quote name='Vaino' post='32835' date='Mar 20 2007, 10:57 AM']Brian,

I have a set of new in box front rotors (Non-drilled) for the M030 brakes. Let me know if you are interested.

Reasonably priced![/quote]



I'm just going to stick with rebuilding the regular caliper's for now, as I was able to aquire a used one from Mike. Much cheaper than going with the M030's for right now at least.

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