Front wheels jump
12-02-2015 | 11:28 AM
#16
Race Director
Joined: Nov 2014
Posts: 13,800
Likes: 200
From: FL
A good point people have made is that Google works well at pulling up Rennlist hits. Larry had a good trick too about adding something to the end of your key work to pull up more Rennlist hits on searches. Larry???
Yes, the RL search function bites! I agree. As do many features on the mobile apps.
The OP did try, so no big deal.
Yes, the RL search function bites! I agree. As do many features on the mobile apps.
The OP did try, so no big deal.
12-02-2015 | 11:38 AM
#17
Banned
Joined: Jan 2013
Posts: 26,141
Likes: 5,418
From: Chicagoland Area
Hi all!
Has anyone felt a pulsating or jumping of the front wheels when turning sharp (almost to stop) when going very slow. Like backing out of parking place. Seems more pronounced when cold. Almost feels like tires are trying to grip. My 997 did this but was a 4S and since the front tires had drive, it was normal. Did a search but didn't come up with anything. TIA as always.
Has anyone felt a pulsating or jumping of the front wheels when turning sharp (almost to stop) when going very slow. Like backing out of parking place. Seems more pronounced when cold. Almost feels like tires are trying to grip. My 997 did this but was a 4S and since the front tires had drive, it was normal. Did a search but didn't come up with anything. TIA as always.
https://rennlist.com/forums/991/8949...om-lexvan.html
12-02-2015 | 05:38 PM
#18
Rennlist Member
Joined: May 2013
Posts: 1,460
Likes: 70
From: Louisville KY
Great article in the latest Panarama magazine about this. Describes why it happens and for good reason! As said above, the wider front tires are the big issue. I have 19" winters w 235s up front and it is almost non existant now for winter.
12-02-2015 | 06:20 PM
#19
Pro
Joined: Jul 2013
Posts: 567
Likes: 13
From: NC
A good point people have made is that Google works well at pulling up Rennlist hits. Larry had a good trick too about adding something to the end of your key work to pull up more Rennlist hits on searches. Larry???
Yes, the RL search function bites! I agree. As do many features on the mobile apps.
The OP did try, so no big deal.
Yes, the RL search function bites! I agree. As do many features on the mobile apps.
The OP did try, so no big deal.
type in the google search bar
site:rennlist.com + what you are searching for
12-02-2015 | 08:37 PM
#22
Burning Brakes
Joined: Oct 2014
Posts: 1,195
Likes: 6
12-02-2015 | 09:51 PM
#23
Three Wheelin'
Joined: Dec 2012
Posts: 1,663
Likes: 132
From: SC
12-03-2015 | 06:19 AM
#25
Rennlist Member
Joined: Aug 2012
Posts: 6,243
Likes: 1,305
From: Pac NW
No, these are the current-generation MPSSes, which didn't have Porsche's stamp of approval. I'm not sure you can buy the N-spec MPSSes at retail yet, or if there's any difference.
My front tires are smaller than most people here will be running (235/40ZR19), but I still experienced a lot of 'acorn' bumping with the original Pirellis at temperatures in the < 50F range. It's definitely less pronounced now -- in fact, I haven't noticed it at all.
The Pirellis were a bit livelier in the steering department than the Michelins, subjectively speaking, but in all other respects the latter appear to be better. I haven't had a chance to try them in heavy rain yet but I don't expect any surprises vis-a-vis the Pirellis.
My front tires are smaller than most people here will be running (235/40ZR19), but I still experienced a lot of 'acorn' bumping with the original Pirellis at temperatures in the < 50F range. It's definitely less pronounced now -- in fact, I haven't noticed it at all.
The Pirellis were a bit livelier in the steering department than the Michelins, subjectively speaking, but in all other respects the latter appear to be better. I haven't had a chance to try them in heavy rain yet but I don't expect any surprises vis-a-vis the Pirellis.
12-04-2015 | 03:04 AM
#26
Burning Brakes
Joined: Oct 2014
Posts: 1,195
Likes: 6
No, these are the current-generation MPSSes, which didn't have Porsche's stamp of approval. I'm not sure you can buy the N-spec MPSSes at retail yet, or if there's any difference.
My front tires are smaller than most people here will be running (235/40ZR19), but I still experienced a lot of 'acorn' bumping with the original Pirellis at temperatures in the < 50F range. It's definitely less pronounced now -- in fact, I haven't noticed it at all.
The Pirellis were a bit livelier in the steering department than the Michelins, subjectively speaking, but in all other respects the latter appear to be better. I haven't had a chance to try them in heavy rain yet but I don't expect any surprises vis-a-vis the Pirellis.
My front tires are smaller than most people here will be running (235/40ZR19), but I still experienced a lot of 'acorn' bumping with the original Pirellis at temperatures in the < 50F range. It's definitely less pronounced now -- in fact, I haven't noticed it at all.
The Pirellis were a bit livelier in the steering department than the Michelins, subjectively speaking, but in all other respects the latter appear to be better. I haven't had a chance to try them in heavy rain yet but I don't expect any surprises vis-a-vis the Pirellis.