just to let you guys know i tried putting the tire pressure sensors in my spare tire after getting my new rims and the warning light didnt go away...

 

You would have to have a full size spare for that to work. The light comes on when the PSI is somewhere in the 20`s, how much does the space saver hold in terms of psi?

 

i put 35psi in the spare tire

 

just out of curiosity why not just put the tps in your new rims?

 

we tried in mine. Doesn't fit. i have a gram lights optimise 57. Somehow the inside curves wont fit with the TPMS .

 

i see and if it did all you need is to reprogram it....

 

I read somewhere that the tpms in the evo x's also reads rotations. So putting them in the spare would be useless.

 

^ That is true.

 

if it also reads rotation how come the light doesn't come on when you are at a stop or when you first crank the car? just curious.

 

cuz mitsu installed a super smart TPMS that nasa uses on the shuttle (thats how they keep finding the marble size tiles that fall off of it when it launchs).....

 

Oh yea, duuuh, the sensors are powered by kinetic energy. The wheel needs to rotate

 

i don't understand this, and i apologize if you are kidding. but this would still mean that the light would come on at a stop light or when you cranked the car in the morning after being parked all nite since there would be no rotational force on the sensors.

 

There is stored energy in the sensors, and when the sensors transmit RF, it gets recharged through kinetic energy. And I think the computer waits a little bit before turning on the TPMS light, because it took around 10 miles for me to get the TPMS light when I put my wheels and tires.

The fact is that the TPMS needs to be put on the actual wheels. I've tried many tricks, and have failed. The spare tire trick worked on my Nissan 350z which uses battery type TPMS, Mitubishi uses battery less TPMS.

See below website

http://www.freshpatents.com/Battery-...pe=description

 

now that makes sense to me. thanks.

justin

 

Also, I dont think the car reads the sensors below 30mph or so. Thats why they dont come on when your parked, and turning on. They need a certain amount of rotation to power them, and the computer goes by that.