Rims Opinion...
06-24-2008 | 12:27 AM
#31
Race Car
Joined: Sep 2007
Posts: 3,663
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From: No where Oklahoma AKA "The Dust Bowl" In The Arm pit Of Hell
Yeah... Well... There isn't mass of 5x130 rims. And most are 20" or more.
Wait... Someone said 20" were bad for the suspension? And if I use slimer tires? I means, I currently have 4 x 17" * 7".
If I go for 20", I will have 1.5" more on radius. So, it's probably possible to find 1.5" slimer tires... mine are already plenty fat like that.
Wait... Someone said 20" were bad for the suspension? And if I use slimer tires? I means, I currently have 4 x 17" * 7".
If I go for 20", I will have 1.5" more on radius. So, it's probably possible to find 1.5" slimer tires... mine are already plenty fat like that.
06-24-2008 | 01:17 AM
#33
Thread Starter
Pro
Joined: Jun 2008
Posts: 695
Likes: 2
From: Québec, Québec, Canada
First off you need to spend some time to understand wheels/tires and how they effect your car. Andrew Olsen is correct the wheels you want will not work on your car. Second, there were never any 17" Porsche Phone dials so you have something else (16" or 15"s). What you want is a wheel/tire assembly that is close to the original diameter of the stock wheel/tire assembly. Typically you can vary by up to +/- 3% without having adverse effect on handling or the ABS. (From the picture I'm guessing your car does not have ABS.) That means if you move up to 17" or 18" or even 20" the tires need to be of a smaller aspect ratio to maintain the stock overall diameter. Third, you MUST have the correct offset on the wheels or they will rub on the inside or outside of the fenders and/or restrict turning the car.
This forum is more than willing to help you with what will fit correctly, how it looks is up to you.
This forum is more than willing to help you with what will fit correctly, how it looks is up to you.
Is the overall circonference have to stay the same? Andrew's excel take into account change of the speed from bigger rims on the instrument...
06-24-2008 | 01:18 AM
#34
Thread Starter
Pro
Joined: Jun 2008
Posts: 695
Likes: 2
From: Québec, Québec, Canada
06-24-2008 | 02:26 AM
#35
Rennlist Member
Joined: Jan 2004
Posts: 12,620
Likes: 6
From: Boulder Creek, CA
Tire Dimensions explained
The Plus Concept
Look into those. Later cars had, among other choices, 225/45-17 and 255/40-17 staggered-width tires. There are lots of used rims floating around in these sizes, just check the offsets. These are essentially a "plus one" size upgrade compared to your phone dials and should fit with some clearance. Going larger than that means that things get tight, offsets become more critical, etc. I think you have to start moving sheetmetal around to get over 255 in front or 295 in the back, but I'm not positive about those numbers. It will depend on the offset. Lots of much more knowledgeable people around here can help you find the limits with tire fitment, if that is what you're after.
The Plus Concept
Look into those. Later cars had, among other choices, 225/45-17 and 255/40-17 staggered-width tires. There are lots of used rims floating around in these sizes, just check the offsets. These are essentially a "plus one" size upgrade compared to your phone dials and should fit with some clearance. Going larger than that means that things get tight, offsets become more critical, etc. I think you have to start moving sheetmetal around to get over 255 in front or 295 in the back, but I'm not positive about those numbers. It will depend on the offset. Lots of much more knowledgeable people around here can help you find the limits with tire fitment, if that is what you're after.
06-24-2008 | 11:19 AM
#36
Thread Starter
Pro
Joined: Jun 2008
Posts: 695
Likes: 2
From: Québec, Québec, Canada
Tire Dimensions explained
The Plus Concept
Look into those. Later cars had, among other choices, 225/45-17 and 255/40-17 staggered-width tires. There are lots of used rims floating around in these sizes, just check the offsets. These are essentially a "plus one" size upgrade compared to your phone dials and should fit with some clearance. Going larger than that means that things get tight, offsets become more critical, etc. I think you have to start moving sheetmetal around to get over 255 in front or 295 in the back, but I'm not positive about those numbers. It will depend on the offset. Lots of much more knowledgeable people around here can help you find the limits with tire fitment, if that is what you're after.
The Plus Concept
Look into those. Later cars had, among other choices, 225/45-17 and 255/40-17 staggered-width tires. There are lots of used rims floating around in these sizes, just check the offsets. These are essentially a "plus one" size upgrade compared to your phone dials and should fit with some clearance. Going larger than that means that things get tight, offsets become more critical, etc. I think you have to start moving sheetmetal around to get over 255 in front or 295 in the back, but I'm not positive about those numbers. It will depend on the offset. Lots of much more knowledgeable people around here can help you find the limits with tire fitment, if that is what you're after.
One last question... The offset is in which way? I guess it's away from the car?
06-24-2008 | 02:03 PM
#37
Instructor
Joined: Jun 2005
Posts: 132
Likes: 0
From: Tampa Bay Florida
Whatever floats your boat...but they look like they came off some kids CRX back last century. Personally I think Porsche chose well with phone dials for the OBs and flats for the S4s.
JPC - Seminole, FL
JPC - Seminole, FL
