Hey Guys, I have purchased I forged wheels from guy off forum, 18s and 19s stock zo6 sizes and took to dealer to mount on my brand new run flats dealer cant mount due to must be certified I am told. well they took to other tire place and all mount up fine except 1 frt one first he says maybe oblong tire then maybe somthing wrong with rim! anybody had issues or have any ideas for me to give these guys?thanks ED

 

We use Discount Tire out here. All of their shops have someone certified to mount runflats. They also will fix flat free.
Extended mobility tires (runflats) are difficult to work with. The run flat sidewalls are extremely stiff so that they can support the weight of the car without air and then you couple that with the very short sidewall in a 35 series tire and it is major pain!
I would recommend you find a shop experienced in mounting them with the proper machine and trained people.

Try Discount Tire first. If there are none in your area, I would check the Tire Rack list of certified installers and you may also check the Goodyear dealer in your area.

 

I don't know if your wheels have a belly band to strap the tps, but my WCC rear wheels/tires were a real b!tch to mount and bead.

 

The Vette TPS is a complete unit uncluding stem and mounts to the tire stem hole.

 

Yes, in OE and some other wheels that are manufactured to accept the sensors in the OE mounting style.

Butt.....many aftermarket wheels, including most models of iForged (like the OP is dealing with) require the sensors to be mounted inside the wheel with bands or brackets. Here's a picture of a bracket in an aftermarket wheel:




Bob

 

Wow I would think that would cause a problem in balancing the wheel ?? do they just add weight to the other side to get it balanced ?

 

I haven't ever heard of any problems balancing wheels with sensors. I think the sensor is in the neighborhood of an ounce.

The OE wheels mount the sensors like this:




I guess there's a little wheel material removed to make the valve stem hole, and that might compensate for the weight of the sensor.

The aftermarket iForged, Forgeline, HRE, etc. don't have any valve stem holes on the outside of the wheel for cosmetic purposes, so there's no place to mount the sensor in the OE manner. But I don't think there's a problem balancing up these wheels.

The big problem is that the sensors are deep inside the wheel. It's difficult to trigger them with a TPMS tool when trying to program them during a relearn procedure. The antenna of the tool needs to be within a couple of inches of the sensor for its signal to properly trigger the sensor to send its data. When mounted in the OE manner you can put the tool's antenna on the rubber sidewall right next to the valve stem and it will easily trigger the sensor.

You can see in that picture of the sensor mounted with a bracket that it is way inside the tire and will be hard for the tool to trigger it. They may have better luck shooting through the tread area than the sidewall. Another problem would be that you have to know exactly where the sensor is so you can get the tool as close as possible. Especially with sensors mounted with straps/bands inside the wheel, you need to know exactly where they are.

Also, the radio transmission from the sensor to the TPMS computer in the car can be attenuated by being deep inside the wheel, and you may get intermittent indications on the DIC of "xx psi" when the signal isn't received properly.

Butt.....the wheels look good!!!

Bob

 

I agree that it is very important to mount the tps directly in line with the protruding tire stem. The ones that are mounted by a belly band or strap also should be secured with double sided 3M tape to reduce the possibility for slippage when the tires/wheels are spinning. (as if any of us ever spin the tires)