An option for spare tire replacement.... - ZR-1 Net Registry Forums

VetteMed · 01-21-2012

By now, our original spare tires are questionable -- and for those of us with upgraded brakes, the spare won't even fit in the front.

Some guys have adapted the late model GTO spare, which apparently is also similar or the same as the CTS and Lucerne spares. I'm told that this requires some grinding of the hub mating surface on the spare wheel, for it to work on a C4. Used, these spares go for $100-150. The wheel alone is around $100-150 new from GM when you factor in shipping, or local dealer markup.

I came across another option, which is now "standard equipment" in all of my vehicles. Apparently some late model GM cars are equipped with a compact 12V compressor, in which is mounted a can of sealant, and a pressure gauge. I bought a "lot" of these, in order to get a good price on the few that I needed for my own vehicles. I have a few extras that I bought as part of the deal, I figured I'd see if anyone here is interested.

This unit will fit comfortably in the storage bins in the C4, and will fit under the storage trays, leaving that available for whatever you need.

Here's a few pics:

If anyone is interested, I'm selling my remaining few for $85 each, including shipping by priority mail.

tomtom72 · 01-23-2012

Hey Andrew, that's neat! Just curious, what does GM say about the TPS sensors after one uses that set up to fix the flat?

Tom

VetteMed · 01-23-2012

Tom, from my understanding, it is considered safe for the newer sensors which are in the valve stem. I would assume the older style sensors are able to tolerate it as well, but I really have no proof

I think it really depends on the amount of time the sealant sits in the tire before the tire is dismounted and patched. if it's done in a reasonable amount of time, then I would expect the pressure sensor to be able to be cleaned and put back into service.

VetteMed · 01-23-2012

Q: Are tire pressure sensors compatible with GM Inflator Kits?
A: While tire pressure sensors are NOT compatible with commercially-available sealants, they HAVE been tested and ARE compatible with GM Inflator Kits and the sealant that they use. After inflator kit use, the sensor should be inspected for any damage, and replaced/cleaned as needed.

GOLDCYLON · 01-23-2012

Over at the other forum a member found that sears on line sells the replacement dougnut tire. T-155

VetteMed · 01-23-2012

Quote:

Originally Posted by GOLDCYLON

Over at the other forum a member found that sears on line sells the replacement dougnut tire. T-155

Yep, that's a great option if you have stock brakes. I am running C5 brakes up front, and the spare won't clear.

GOLDCYLON · 01-23-2012

Quote:

Originally Posted by VetteMed

Yep, that's a great option if you have stock brakes. I am running C5 brakes up front, and the spare won't clear.

I heard the GTO spare tire option will clear the brakes. If you have a stock setup the Toyota Camray and New Lincolns are all sporting 155/70D/17s for spare tires

HAWAIIZR-1 · 01-23-2012

Quote:

Originally Posted by VetteMed

Q: Are tire pressure sensors compatible with GM Inflator Kits?
A: While tire pressure sensors are NOT compatible with commercially-available sealants, they HAVE been tested and ARE compatible with GM Inflator Kits and the sealant that they use. After inflator kit use, the sensor should be inspected for any damage, and replaced/cleaned as needed.

Did they have a tire limit size for this? I wanted the Continental kit in Tire Rack but it does not work for our rear tires and the sealant might not be enough for the large size tires. I ended up buy the C5 kit I found on ebay but was worried if too old as well as event the C5 tire is smaller that our huge rear tire I thought. http://www.tirerack.com/accessories/...kit/17size.jsp

Thanks!

HAWAIIZR-1 · 01-23-2012

Quote:

Originally Posted by tomtom72

Hey Andrew, that's neat! Just curious, what does GM say about the TPS sensors after one uses that set up to fix the flat?

Tom

Tom,

You still use sensors? I thought they come off at high speeds like you drive...........

VetteMed · 01-23-2012

Quote:

Originally Posted by HAWAIIZR-1

Did they have a tire limit size for this? I wanted the Continental kit in Tire Rack but it does not work for our rear tires and the sealant might not be enough for the large size tires. I ended up buy the C5 kit I found on ebay but was worried if too old as well as event the C5 tire is smaller that our huge rear tire I thought. http://www.tirerack.com/accessories/...kit/17size.jsp

Thanks!

Craig, these kits are shipped with fullsize trucks, specifically the Silverado when equipped with dual exhaust. I figure if it's adequate for a tire with the size and volume as found in a fullsize truck, our 315s shouldn't be a problem.

01-21-2012	#1
VetteMed Join Date: Mar 2009 Location: Orlando, FL Posts: 1,828	An option for spare tire replacement.... By now, our original spare tires are questionable -- and for those of us with upgraded brakes, the spare won't even fit in the front. Some guys have adapted the late model GTO spare, which apparently is also similar or the same as the CTS and Lucerne spares. I'm told that this requires some grinding of the hub mating surface on the spare wheel, for it to work on a C4. Used, these spares go for $100-150. The wheel alone is around $100-150 new from GM when you factor in shipping, or local dealer markup. I came across another option, which is now "standard equipment" in all of my vehicles. Apparently some late model GM cars are equipped with a compact 12V compressor, in which is mounted a can of sealant, and a pressure gauge. I bought a "lot" of these, in order to get a good price on the few that I needed for my own vehicles. I have a few extras that I bought as part of the deal, I figured I'd see if anyone here is interested. This unit will fit comfortably in the storage bins in the C4, and will fit under the storage trays, leaving that available for whatever you need. Here's a few pics: If anyone is interested, I'm selling my remaining few for $85 each, including shipping by priority mail. __________________ 2004 Z06/Z16 LeMans Commemorative Edition 1991 ZR-1 #302 White/Gray (sold) 1991 ZR-1 #1147 Red/Saddle (sold)

01-23-2012	#2
tomtom72 Join Date: Dec 2004 Location: Jacksonville, FL USA Posts: 4,645	Re: An option for spare tire replacement.... Hey Andrew, that's neat! Just curious, what does GM say about the TPS sensors after one uses that set up to fix the flat? Tom __________________ 1990 ZR-1, Black/grey, #2233, stock. ZR-1 Net Reg Founding Member #316 & NCM member

01-23-2012	#3
VetteMed Join Date: Mar 2009 Location: Orlando, FL Posts: 1,828	Re: An option for spare tire replacement.... Tom, from my understanding, it is considered safe for the newer sensors which are in the valve stem. I would assume the older style sensors are able to tolerate it as well, but I really have no proof I think it really depends on the amount of time the sealant sits in the tire before the tire is dismounted and patched. if it's done in a reasonable amount of time, then I would expect the pressure sensor to be able to be cleaned and put back into service. __________________ 2004 Z06/Z16 LeMans Commemorative Edition 1991 ZR-1 #302 White/Gray (sold) 1991 ZR-1 #1147 Red/Saddle (sold)

01-23-2012	#4
VetteMed Join Date: Mar 2009 Location: Orlando, FL Posts: 1,828	Re: An option for spare tire replacement.... Q: Are tire pressure sensors compatible with GM Inflator Kits? A: While tire pressure sensors are NOT compatible with commercially-available sealants, they HAVE been tested and ARE compatible with GM Inflator Kits and the sealant that they use. After inflator kit use, the sensor should be inspected for any damage, and replaced/cleaned as needed. __________________ 2004 Z06/Z16 LeMans Commemorative Edition 1991 ZR-1 #302 White/Gray (sold) 1991 ZR-1 #1147 Red/Saddle (sold)

01-23-2012	#5
GOLDCYLON Join Date: May 2007 Location: Peoria, AZ Posts: 9,153	Re: An option for spare tire replacement.... Over at the other forum a member found that sears on line sells the replacement dougnut tire. T-155 __________________ GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director 91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V Last edited by GOLDCYLON; 01-23-2012 at 12:18 PM.