WHT Z06: Tires

WHT Z06: Tires

The original factory tire for the Z06 was the Goodyear Eagle F1 Supercar EMT:

Location Part # Tire Size

Front 412561506 P275/35ZR18 (87Y) LL

Rear 412562506 P325/30ZR19 (94Y) LL

Later Goodyear came out with the Goodyear Eagle F1 Supercar G2 RunOnFlat which are directional:

Location Part # Tire Size

Left Front 408561330 P275/35ZR18 (87Y) LL

Right Front 408561331

Left Rear 408029330 P325/30ZR19 (94Y) LL

Right Rear 408029331

Even later Chevrolet changed to the Michelin Pilot Sport PS2 ZP.

Location Part # Tire Size

Front 43657 P275/35ZR18/LL (87Y)

Rear 15925 P325/30ZR19/LL (94Y)

I used Eagles for years but eventually switch to Pilot Sports.

Wheels

As part of the Ron Fellows package my Z06 came with RPO Q76 chrome aluminum wheels.

In 2014 I picked up an extra set of wheels from a a guy on the Corvette Forum. He had taken them off his 2008 Z06 after only 2000 miles to install aftermarket wheels. This was an awesome score considering that new wheels about about $800/each from the dealer. And since they are chromed they are also expensive to repair.

Here are the specifications:

Location GM Size Tire Size Offset Back Spacing

Front 9597715 18 x 9.5 275/35/18 +40mm 6.82" (173.35mm)

Rear 9597716 19 x 12 325/30/19 +59mm 8.82" (224.09mm)

Location	GM	Size	Tire Size	Offset	Back Spacing
Front	9597715	18 x 9.5	275/35/18	+40mm	6.82" (173.35mm)
Rear	9597716	19 x 12	325/30/19	+59mm	8.82" (224.09mm)

Tire Pressure Monitor System

The TPMS sensors used in 2005 through 2009 C6 Corvettes are made by Schrader:

The year and month of manufacture are molded into the top of the sensor with little dials. Each has a ring of numbers and an arrow in the center that points to the year or month.

Month (December) Year (2014)

Here's a list of sensor and related parts:

Part # Description Details

GM 25758220 TPMS sensor gray with seal, without nut

Schrader 20076 TPMS sensor red with seal and nut

GM 19117460 TPMS service kit nut, grommet, valve core, aluminum cap

Schrader 20004 TPMS service pack nut, grommet, valve core, gray plastic cap

GM 15234846 TPMS sensor nut

GM 25754190 TPMS grommet

Schrader 20495 valve stem caps aluminum, quantity 100

Schrader 20395 valve stem caps gray plastic, quantity 100

Part #	Description	Details
GM 25758220	TPMS sensor	gray with seal, without nut
Schrader 20076	TPMS sensor	red with seal and nut
GM 19117460	TPMS service kit	nut, grommet, valve core, aluminum cap
Schrader 20004	TPMS service pack	nut, grommet, valve core, gray plastic cap
GM 15234846	TPMS sensor nut
GM 25754190	TPMS grommet
Schrader 20495	valve stem caps	aluminum, quantity 100
Schrader 20395	valve stem caps	gray plastic, quantity 100

My Z06 came with aluminum Schrader caps and I ordered a box of caps so I could keep OEM appearance when caps are lost or damaged.

TPMS sensors use a lithium battery and have a lifetime of about ten years depending on miles. The sensors transmit information every 60 minutes while sleeping and every 60 seconds when turned on. They turn on above 20 MPH and sleep after 20 minutes below that speed. There is one TPMS antenna per sensor located near each wheel.

I replaced my sensors after about 11 years when I was installing new tires. First I ordered the GM parts from Amazon but I sent them back because the date codes ranged from 3 to 5 years old. Also, the GM parts do not come with new nuts so I returned them. I end up buying Schrader sensors from Tire Rack. They also had a large range of date codes but the boxes all had 2017 dates. My original sensors were all dated December, 2007 except for one dated July 2007. This is four months after my car was built but I had a sensor fail and it was replaced under warranty.

In the case of my Z06, the battery is a Renata CR2450NFV-LF and some folks have removed the potting material and replaced batteries.

The 2007 C6 uses 315 MHz sensors. Sensors can triggered with a low frequency signal TPMS tools generate. I have an OTC 3833, a Cub Pro-101 TPMS, and an Autel TS408. I bought the OTC because it is made by the company that makes the factory scan tool Kent-Moore J-46079. It uses C cells and is really hard on batteries. The Cub came from Tire Rack for $19.99 and was a special deal they ran back in 2014. Its firmware can't be updated but it works great for the years and models it supports. It uses AA cells and is also hard on them. It displays the sensor ID and the temperature if the sensor supports this feature (my sensors do not). It wakes up sensors more quickly than the OTC. The Autel works great, can remember details about four sensors at a time, and is eligible for lifetime firmware updates. It has worked with every make and model I've seen.

Tire Pressure Sensor Learn

Here's the TPMS learn procedure from volume 3, page 16-102 of the service manual:

Important: Before proceeding with the procedure below, ensure that no other learn procedure is being performed simultaneously.

Select the ACC position on the ignition switch.

Simultaneously press the keyless entry transmitter lock and unlock buttons until a horn chirp sounds, indicating the TPMS learn mode has been enabled.

Starting with the left front tire, hold the antenna of the J46079 against the tire sidewall close to the wheel rim at the valve stem location then press and release the Activate button and wait for a horn chirp.

After the horn chirp sounds, proceed as in step 3 for the next 3 sensors in the following order:

Right front
Right rear
Left rear
Left front

After the left rear sensor is learned, a double horn chirp will sound indicating all sensor IDs have been learned.

Select the OFF position on the ignition switch to exit the TPM learn mode.