Just Purchased 05 Mn6 Z51 And Have A Few Questions About Tires For Autocross/ Tire Sensors/ Active Handling.
I Have Been Reading Some Other Posts About These Questions And I Am Confused.
I Would Like To Change Tires Before Driving To Track (50 Miles One Way) So I Guess I Am Looking For Sreet/autocross Tires. Then What About Not Having Sensors Affecting Comp. Driving Mode. I Have About 2 Years Of Seat Time But In Another Car And Class. Any Clarification Would Be Apprciated..thanks

 

There are a number of different solutions, depending on your budget and objectives.

Here is what I did for an example. I pieced this solution together from others forum members "BEZ06" and "Vet." It is probably the lowest cost approach, but realize this will be a compromise as far as performance goes, but still a huge improvement over GY runflats.

Buy a set of take-offs from another C6 owner that upgraded. I was able to get a set of wheels, sensors, and GY runflats with <500 miles on them for just over $1000 in the "C6 Parts for Sale/Wanted" section. Those are now my street tires. My other tires were already used up so I needed new street rubber and this move essentially netted me a set of wheels for free.

On the other set of wheels, I put on Toyo Proxes R888 (295/30ZR19 rear & 255/35ZR18 front). These are not the fastest race compound tire, but you can drive them on the street without worrying about cutting them like the Hoosiers. I plan to use them for wet events too. The wear rating is 100, so that still puts me in a race tire class with the events I run in. The fastest guys run Hoosiers or Kumhos with a wear rating of 40, but then you need a trailer and tow vehicle which my budget does not allow.

You also need to buy a TPMS tool. There is a simple procedure to register the tire sensors to the car after you swap wheels.

Hope that helps.

 

Will I use Bridgestone Potenza RE050A's, and the wear rating is 140
and that puts me in a street tire class. And the tires orks really good
It's not an A6 or 710 but not bad.

Also I have the TPMS, but I never set them so it's like running with out them, and have no problems. Tire size 255x35-18 285x35-19.

 

Thanks for the help. Is there a chance that I could put non-runflats without sensors and not have any issues?

 

There is a chance.

There is a difference between model years and since blkc6z51 and you both have 2005's I would trust blkc6z51's experience more than others. On the newer model years, you definitely need TPMS sensors registered in order to turn of TC/AH.

I personally like to have the ability to review my tire pressures using the DIC before and after autocross runs. We run 1.8 mile courses so pressures change a lot. I have never tried swapping wheels without re-registering the sensors on my 2006 to see if that causes a problem deactivating TC/AH.

 

My production date is 08/05 which I think is after the magnet date..so chances are I need the sensors....I take it that running on stock GY/SC Tires is not a good idea? Is there anyone out there doing Autocross on these? I take it that they do not wear well and are expensive to replace?

 

logic dictates that if the ECU does not register a safe tire pressure it will limit handling and speed to 55 mph

 

You can certainly Auto-X on the stock GY Supercar tires. There are things I don't like about them, but they are pretty sticky. I doubt you'll find anything much faster until you get to the DOT-Rs, and that puts you in another class.

Of course a few runs will probably take a good bit of life off these rather expensive tires, and having a spare set of wheels and track day tires (with sensors, and a TPMS tool) makes a lot of sense if you're going to do it on a regular basis.

For that matter, if you live anywhere that has winter and plan on driving the car year 'round, a set of wheels with winter tires is a good deal, too. The stock Supercars (and most anything else with that kind of performance) don't work well below about 50 degrees F, you might as well save the summer tires for summer use.

 

I ran for several years without sensors on race tires/wheels. No problems at all. The ECU does not "limit handling and speed to 55 mph." I guess our cars are not as someone's logic would dictate.

 

This is a very important point. You will not necessarily be saving money by using street compound tires rather than racing tires. Street tires are more expensive and you can burn through them just as quickly as the racing tires.

In the end, what matters is how much you plan on participating. If not much, then street tires will get you by. If you plan on doing this regularly, then you might seriously consider taking a set of race wheels and tires with you and then mounting them at the event.

 

I have 14 events this year and my goal is not to miss any...

 

My Re050a's are non runflats, and when I change over to them and drive to the event I turn off the TC/AH with no problems. My DIC is
still reading TP from the other tires and it dose that all day.

Also the Re050a's work much better then the GY/SC. My production
date is also 08/05. I ran over 17 events last year and had zero
problems with the TPMS.