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ChrisCostaRica
Cruiser Fan
Posted: Mar 29, 2008, 11:20 AM
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My tires are 205/55/16. Can I use something bigger for 16 inch rim, like 205/80 ? I want to raise the car about 1 to 2 inches. Bad roads down here in Costa Rica...
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Posts: 16 | From: Costa Rica, Central America
| Registered: Dec 2, 2006, 10:09 AM
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fiveg56
Cruiser Fan
Posted: Mar 29, 2008, 3:53 PM
Post #2 of 10
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Re: [ChrisCostaRica] Tire size
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I'm pretty sure it will confuse the computer if you change the tire size. A taller tire will cause your speedometer to show an incorrect speed. Also your ABS and TRAC control might have issues.
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2003 PT GT
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Posts: 29 | From: Minneapolis, MN
| Registered: Mar 17, 2008, 11:00 AM
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DREAM2ME
Cruiser Expert
PT Cruiser Club Member
Posted: Mar 30, 2008, 12:28 PM
Post #3 of 10
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Re: [ChrisCostaRica] Tire size
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 HEY CHRIS,
WHAT YEAR IS YOUR PT?I HAVE OWNED ONE SINCE 00.
ALL THE SIZE MATTERS ALL TALL THEY SET.205 LOW
215 MED RIDE
225 HIGH RIDE
THIS TIRE WILL MAKE YOUR PT RIDE SMOOTHER
LIKE SAID BY OTHER READERS[REFER TO OWNERS MAN./AND WARR.
IF YOUR PT IS OUT OF WARR. THE BIGGER TIRES WILL
HELP YOUR RIDE FOR SURE.
ALSO IT WILL KEEP THE WHEELS IN GOOD SHAPE. KEEP CRUISING DOWN SOUTH
DREAM2ME
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Posts: 104 | From: IRVING,TEXAS
| Registered: Mar 25, 2008, 8:33 PM
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ChrisCostaRica
Cruiser Fan
Posted: Mar 31, 2008, 9:59 AM
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Re: [DREAM2ME] Tire size
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My PT is 2001. I donŽt care about the warranty. I understand that changing 205 to 225 has to do more with the tire width. Since the height is what I want to change, I think I should go from 55 to 60 (205/55/16 to 205/60/16). That should raise the car 1.8 inch???
Can I go to 17 inch rim perhaps?
Is there enough SPACE? Especially for the front wheels.
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Posts: 16 | From: Costa Rica, Central America
| Registered: Dec 2, 2006, 10:09 AM
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DREAM2ME
Cruiser Expert
PT Cruiser Club Member
Posted: Mar 31, 2008, 6:18 PM
Post #5 of 10
(427 views)
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Re: [ChrisCostaRica] Tire size
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THE HIGHER THE NUMBER[205/55/16]LOW
MEANS HOW TALL,SORRY IF YOU ARE MISINFORMED.
ON A 16 OR 17 INCH RIM AN 55 IS AS THIN YOU CAN GET
IF YOU WANTTO HANDLE THE ROUGH ROADS I REALLY
WOULD GO TO[WWW.THETIRERACK]THEY WILL FIX
YOU RIGHT UP AND EVEN SHIP THEM.
THEY SELL RIMS /SHOCKS /STRUTS
ALL KIND OF TECH INFO ON THE CORRECT
SIZE FOR THE ROAD.
I HOPE THIS HELPS YOU
IF NOT I KNOW SOME TIRE REPS. DREAM2ME
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Posts: 104 | From: IRVING,TEXAS
| Registered: Mar 25, 2008, 8:33 PM
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Duster
Cruiser Buff
Posted: Apr 9, 2008, 8:31 PM
Post #6 of 10
(367 views)
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Re: [ChrisCostaRica] Tire size
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Since the entire wheel set (wheel+tire) must have the right diameter for the speedometer giving the right speed, it's a very bad idea.
Plus, you can have wheel bearings problems, strut housing dimension problems, suspension problems, stability problems, etc.
You have to know that the profile/aspect ratio (55) value is a % of the treadwidth (205), so bigger is the aspect ratio (within the same treadwidth), bigger is the diameter 'cause bigger is the sidewall height value.
If you're going in the "over-treadwidth" way, you should choose a smaller aspect ratio. You'll have a bigger air volume but the height will remains the same.
That being said, it's commonly known that you should stay within a 3% difference of the original diameter to avoid problems.
The only way to have more comfort (bigger sidewall height) without changing the diameter is to choose a smaller wheel/mag diameter (15" instead of 16") so 195/65/R15 or maybe 205/60/R15
Here's a nice size calculator: http://www.miata.net/garage/tirecalc.html
If you really want to raise the car (really?!), install a lift kit.
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(This post was edited by Duster on Apr 9, 2008, 9:03 PM)
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Posts: 87 | From: Quebec, Canada
| Registered: Apr 9, 2008, 11:44 AM
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sent1
Cruiser Expert
Posted: Apr 10, 2008, 6:22 AM
Post #7 of 10
(358 views)
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Re: [Duster] Tire size
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Hey Chris, this is one of the best explanations of of the tire sizing I have seen. So I guess it comes down to how cushy you want the ride to be or actual ground clearence. Like duster said, if you want ground clearence a lift kit is the answer. If you want cushy, then its a smaller wheel diameter so you can have a taller tire.
Quote:
Since the entire wheel set (wheel+tire) must have the right diameter for the speedometer giving the right speed, it's a very bad idea.
Plus, you can have wheel bearings problems, strut housing dimension problems, suspension problems, stability problems, etc.
You have to know that the profile/aspect ratio (55) value is a % of the treadwidth (205), so bigger is the aspect ratio (within the same treadwidth), bigger is the diameter 'cause bigger is the sidewall height value.
If you're going in the "over-treadwidth" way, you should choose a smaller aspect ratio. You'll have a bigger air volume but the height will remains the same.
That being said, it's commonly known that you should stay within a 3% difference of the original diameter to avoid problems.
The only way to have more comfort (bigger sidewall height) without changing the diameter is to choose a smaller wheel/mag diameter (15" instead of 16") so 195/65/R15 or maybe 205/60/R15
Here's a nice size calculator: http://www.miata.net/garage/tirecalc.html
If you really want to raise the car (really?!), install a lift kit.
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DC1 #1610--5-speed. Its got some stuff.
'03 Inferno Red--Its getting some stuff too!
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Posts: 424 | From: Salem, Oregon
| Registered: Apr 14, 2007, 8:56 AM
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Duster
Cruiser Buff
Posted: Apr 10, 2008, 8:33 AM
Post #8 of 10
(351 views)
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Re: [sent1] Tire size
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Hi Sent1!
Thanks for the compliment. I'm brand new to your forum but I'll be more than happy to help some fellow PTers if I can.
I do own a PT myself, it's a black 2004 Touring Ed.
I'm going into (light) customization so it's why I joined this forum at first, to grab idea and comments 'bout it.
Quote:
Hey Chris, this is one of the best explanations of of the tire sizing I have seen. So I guess it comes down to how cushy you want the ride to be or actual ground clearence. Like duster said, if you want ground clearence a lift kit is the answer. If you want cushy, then its a smaller wheel diameter so you can have a taller tire.
Quote:
Since the entire wheel set (wheel+tire) must have the right diameter for the speedometer giving the right speed, it's a very bad idea.
Plus, you can have wheel bearings problems, strut housing dimension problems, suspension problems, stability problems, etc.
You have to know that the profile/aspect ratio (55) value is a % of the treadwidth (205), so bigger is the aspect ratio (within the same treadwidth), bigger is the diameter 'cause bigger is the sidewall height value.
If you're going in the "over-treadwidth" way, you should choose a smaller aspect ratio. You'll have a bigger air volume but the height will remains the same.
That being said, it's commonly known that you should stay within a 3% difference of the original diameter to avoid problems.
The only way to have more comfort (bigger sidewall height) without changing the diameter is to choose a smaller wheel/mag diameter (15" instead of 16") so 195/65/R15 or maybe 205/60/R15
Here's a nice size calculator: http://www.miata.net/garage/tirecalc.html
If you really want to raise the car (really?!), install a lift kit.
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Posts: 87 | From: Quebec, Canada
| Registered: Apr 9, 2008, 11:44 AM
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sent1
Cruiser Expert
Posted: Apr 11, 2008, 7:07 AM
Post #9 of 10
(325 views)
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Re: [Duster] Tire size
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Other guys have explained it. I think its just the way you said it that made more sense to me. I don't know about Costa Rica but its kinda important around these parts that we know how fast we are goin'. Chris just needed the understanding to make the best choice and I thought you gave it to him.
Anyway, welcome! Whatever you decide to do with your PTC, be patient so you can better find the right thing at the right price. We're here to help.
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DC1 #1610--5-speed. Its got some stuff.
'03 Inferno Red--Its getting some stuff too!
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Posts: 424 | From: Salem, Oregon
| Registered: Apr 14, 2007, 8:56 AM
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ChrisCostaRica
Cruiser Fan
Posted: Apr 12, 2008, 11:47 AM
Post #10 of 10
(292 views)
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Re: [Duster] Tire size
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Can't Post
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Thank you guys. I will NOT change the tire size and IŽll stay with 205/50/16.
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Posts: 16 | From: Costa Rica, Central America
| Registered: Dec 2, 2006, 10:09 AM
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