3rd Gen TPMS - Learn Me Something...

Ok, I’m starting this thread because I am genuinely confused about the two different TPMS available for the 3rd Gen. I know they are different angles (45° And 20°). What gets confusing is that they share the same basic appearance otherwise and only the angle sorts the two.

I’m going to elevate it a notch by including my own photos to illustrate better.



So, which is which? I have seen in these forums:
“TPMS sensors for aluminum wheels are 40° steel wheels are at 20°.”
and
“The toyota steel wheel sensors have a 40 degree mounting angle and the toyota alloy sensors have a 20 degree mounting angle.”

So which is it?

The following photos were taken with a common Tacoma alloy rim, but may not be representative of all or other styles. I even chose to illustrate the common “if you flip it 180 degrees” references, so that perhaps we can all learn something.













Perhaps I have done this wrong, but everything I have read about mounting says the label side out and horizontal to the rim hub, nearest the center.

So, which is which? Thoughts?​

 

Pic two is correct for that application unless i am missing something.

 

I would agree on the surface, but found no issue with the other (45°) - there was still clearance. Which means that the 20° would easily work in the steel rims.

 

Deflate a tire all the way, push the tire down into the wheel and see what yours are if you’re curious

 

Pics 3 and 6 break if you get a flat. Pic 5 isn't much tolerance.

 

LOL.... no. Honestly, I started this for others to learn as well as myself. I am building out a set of rims and got both of these styles in direct response to purchasing “alloy” and validating “PMV-C015” as the type. So, I’m not alone. You also hear the “turn them 180°“ espoused like it is a practical solution.
So here we are...

Agree on the 180°s, looks like a horrible idea, but so commonly referenced, I had to see it for myself.
The photo on the 45° Doesn’t do it justice, as there is reasonable clearance. Which makes me wonder about alloy rim designs. Without the well area, this style wouldn’t work. This makes me think the 20° Is correct, but I would LOVE to hear from those with hands-on or prior experience.

 

Here ya go.
Part numbers for TPMS.

G.

 

Thanks. I had that previously, but there is no way to distinguish the part numbers with the part in hand. They are both PMV-C015 (see photos). I haven’t found anything that definitely references the angle to the part number, or that would be the answer.

 

Well I just got some TRD Baja wheels in Bronze for my birthday, and I couldn't be more excited to get them put on. I currently have American Racing AR321 wheels with TPMS but I'm not sure which ones they are. I guess we'll find out soon enough if I need new sensors or not.

Thanks for the informative thread!

 

Not sure about 2nd gen TPMS, but hopefully this is helpful. I hope to learn more soon as well.

 

...and now we can conclude this learning experience:

Here is proof from other forum members that ordered by part number and showed the result.
The Alloy part number IS a 20° TPMS, which confirms the 45° is for steel wheels.

 

Which is why you have to flip the 45’s 180 to work, which they won’t!

G.