Tire pressure etc
Rennlist Member
Joined: May 2009
Posts: 207
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From: British Columbia
Racer
Joined: May 2018
Posts: 347
Likes: 60
From: Golden, CO
See my post above. You are riding with very low pressures. A cab actually offers a softer ride. I bet your tires are old and flat-spotted or your ride expectations are misplaced.
The 19" actually doe not make the ride harsher than the 18". Both have the same sidewall height.
The 19" actually doe not make the ride harsher than the 18". Both have the same sidewall height.
The 18 rear spec is 295/35 R18 = 103.25 mm tire height (295mm*.35)
The 19 rear spec is 295/30 R19 = 88.5 mm tire height (295mm*.3) or 305/30 R19 (91.5mm)
That is about ~5/8" difference in sidewall height on the rear axle for those not metric inclined. And thus part of the reason I went to 18s for my winter tires, to give a little more sidewall height for the unseen pothole before denting a rim.
Racer
Joined: May 2018
Posts: 347
Likes: 60
From: Golden, CO
Both my summer and winter TPMS readings (997.2) tie to my gauge. Probably not accurate to the 1/10psi, but I feel confident in their readings having checked several times on both wheel sets.
Rennlist Member
Joined: May 2009
Posts: 207
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From: British Columbia
Yes. If you watch it constantly as the tires are coming up to temp, you'll also realize the TPMS reading isn't instant and it does seem to cycle through the tires in some sequence.
Both my summer and winter TPMS readings (997.2) tie to my gauge. Probably not accurate to the 1/10psi, but I feel confident in their readings having checked several times on both wheel sets.
Both my summer and winter TPMS readings (997.2) tie to my gauge. Probably not accurate to the 1/10psi, but I feel confident in their readings having checked several times on both wheel sets.
Centre Display options on my car are only: Range.Remain, Audio, & Empty.
Is this a dealer setting or requires Durametric coding? I've looked in the manual and searched forums to no avail. Perhaps I'm using wrong terminology in search
Appreciate any further advice.
Rennlist Member
Joined: May 2009
Posts: 207
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From: British Columbia
I am looking for a way for the On-Board Computer to "automatically" display the TPMS readings - TPMS is displayed without using the stalk/lever... This, instead of either Range Remaining or Audio. Choose either of these, and the information is displayed ignition-on.
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Racer
Joined: Dec 2018
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Rennlist Member
Joined: Dec 2018
Posts: 872
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From: South Eastern Canada
18 inch wheels on a 997 look too small IMHO. The 997 does ride very harsh. And that comes from a guy that once owned Jeeps with leaf spring suspensions. My current new Jeep Wrangler JLU, rides much much smoother than my 997.
So it is nice that you are trying to dial the ride to keep it, and by all means, if you do change something that actually does make a difference, please share, but I think that you'll just have to get use to it.
So it is nice that you are trying to dial the ride to keep it, and by all means, if you do change something that actually does make a difference, please share, but I think that you'll just have to get use to it.
