Planet-9

Replacing 18" wheels with 19"

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7 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHReplacing 18" wheels with 19"

Leading reported evidence

Replace 18's

Suggestion or failed attempt

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
If you're going to REPLACE your 18's with 19's, the TPMS sending unit and valve stem may be moved to the new rims.
Original post Read captured discussion
Replacing 18" wheels with 19"

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Leading evidence: 'Replace 18's' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace 18's' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

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Read captured replies

1 matching discussions · 7 captured posts examined · 1 partial discussions

Compare 4 other evidence results

Replace signal strength compared

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
The system then goes into learning mode, requiring you to drive 2-5 miles for the car to learn which transmitter is at which corner of the car -- (think about it: each receiver will receive radio signals from each of the 4 wheels -- to decide which is which, it looks for 1 signal at each corner with an exagerated sinusoidal changing signal strength compared to the other 3 to tell it which is coming from it's wheel well, as the other 3 transmitters will always be approximately the same distance (a constant 4 to 8 feet)and hence signal strength from any receiver.
Original post Read captured discussion
Replacing 18" wheels with 19"

Replace stock 18' wheels

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
I want to replace my stock 18' wheels with 19' Carrera Sport Wheels.
Original post Read captured discussion
Replacing 18" wheels with 19"

Run >$750

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
From Porsche, they run >$750 for a set of 4, and the ones from Wheel Enhancement were genuine Porsche parts, complete in the stock packaging with the stock numbers and serial numbers.
Original post Read captured discussion
Replacing 18" wheels with 19"

Set direct the onboard computer in the tach

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Then, each time you swap to the other set, direct the onboard computer in the Tach to the TPMS setting, select SET, then tell it tire type (Summer for all but snow tires) and rim diameter.
Original post Read captured discussion
Replacing 18" wheels with 19"

Frequently discussed actions (7)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Replace 18's

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
If you're going to REPLACE your 18's with 19's, the TPMS sending unit and valve stem may be moved to the new rims.
Original post Read captured discussion
Replacing 18" wheels with 19"

Replace signal strength compared

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
The system then goes into learning mode, requiring you to drive 2-5 miles for the car to learn which transmitter is at which corner of the car -- (think about it: each receiver will receive radio signals from each of the 4 wheels -- to decide which is which, it looks for 1 signal at each corner with an exagerated sinusoidal changing signal strength compared to the other 3 to tell it which is coming from it's wheel well, as the other 3 transmitters will always be approximately the same distance (a constant 4 to 8 feet)and hence signal strength from any receiver.
Original post Read captured discussion
Replacing 18" wheels with 19"

Replace stock 18' wheels

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
I want to replace my stock 18' wheels with 19' Carrera Sport Wheels.
Original post Read captured discussion
Replacing 18" wheels with 19"

Run >$750

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
From Porsche, they run >$750 for a set of 4, and the ones from Wheel Enhancement were genuine Porsche parts, complete in the stock packaging with the stock numbers and serial numbers.
Original post Read captured discussion
Replacing 18" wheels with 19"

Set direct the onboard computer in the tach

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Then, each time you swap to the other set, direct the onboard computer in the Tach to the TPMS setting, select SET, then tell it tire type (Summer for all but snow tires) and rim diameter.
Original post Read captured discussion
Replacing 18" wheels with 19"

Set select

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Then, each time you swap to the other set, direct the onboard computer in the Tach to the TPMS setting, select SET, then tell it tire type (Summer for all but snow tires) and rim diameter.
Original post Read captured discussion
Replacing 18" wheels with 19"

Use sets, like i do

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
If you'r going to use BOTH sets, like I do for street and track, you can purchase a set of 4 senders and valve stems to install on the new rims.
Original post Read captured discussion
Replacing 18" wheels with 19"

Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Planet-9: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T173940Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1Original post

I want to replace my stock 18' wheels with 19' Carrera Sport Wheels. My car has TPMS. What happens if the new wheels are not TPMS compatible other than obviously the TPMS will not work. Are there any 'hidden' problems that anyone knows about?

POST 2Original post

I'm thinking you will get a lot of annoying error messages saying that TPMS is not active. I'd try to get 19' wheels with TPMS senders/

POST 3Original post

That's exactly what will happen: TPMS malfunction warning that can't be turned off.

POST 4Original post

Thx for the input. I'll make sure to buy new wheels with TPMS but will likely wait until my existing tires need replacing. I'm at 5000 miles now so I figure about this time next year I'll need new rubber.

POST 5Original post

If you're going to REPLACE your 18's with 19's, the TPMS sending unit and valve stem may be moved to the new rims. They will work with any standand Porsche rim. If you'r going to use BOTH sets, like I do for street and track, you can purchase a set of 4 senders and valve stems to install on the new rims. The best price I found BY FAR was from Wheel Enhancement, who sold me a set of 4 each for about $500. From Porsche, they run >$750 for a set of 4, and the ones from Wheel Enhancement were genuine Porsche parts, complete in the stock packaging with the stock numbers and serial numbers. Then, each time you swap to the other set, direct the onboard computer in the Tach to the TPMS setting, select SET, then tell it tire type (Summer for all but snow tires) and rim diameter. The system then goes into learning mode, requiring you to drive 2-5 miles for the car to learn which transmitter is at which corner of the car -- (think about it: each receiver will receive radio signals from each of the 4 wheels -- to decide which is which, it looks for 1 signal at each corner with an exagerated sinusoidal changing signal strength compared to the other 3 to tell it which is coming from it's wheel well, as the other 3 transmitters will always be approximately the same distance (a constant 4 to 8 feet)and hence signal strength from any receiver. The transmitter from the same well will vary from about 6 inches to 18 inches from the receiver as the tire rotates.) Anyway, you could concieveably buy non TPMS rims on eBay, then add senders or move your current ones. Greg

POST 6Original post

gemars, thanks for the info. Finally, someone has a solution. I'll be getting rid of the stock 18" wheels (next spring) and if I understand you correctly, I can have the stems and sensors moved to the new 19" wheels. Yes, I'll be getting Porsche Carrera Sports or Sport Designs. Thanks again.

POST 7Original post

I have the Carrera Sport wheels on my CS that i am trying to sell right now. Let me know if you are interested

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