The Tire DB - Posts about Track and AutoX tire brands
03-25-2009, 06:54 AM
#881
Well... as always, it depends. The advantages you list above are true for shorter sidewall tires but they are not as great as many people make them out to be. And there are advantages for taller sidewall tires.
Tire OD affects gearing and, depending on what you're doing (road racing in this context) sometimes shorter gearing will put the car in a bad spot (engine rpm) for acceleration out of an important corner. Taller sidewalls are also more forgiving under hard braking and give a broader slip angle curve in the corners making it easier to drive at the limit. A higher horsepower RWD car will put power down better with taller rear tire sidewalls.
Tire OD affects gearing and, depending on what you're doing (road racing in this context) sometimes shorter gearing will put the car in a bad spot (engine rpm) for acceleration out of an important corner. Taller sidewalls are also more forgiving under hard braking and give a broader slip angle curve in the corners making it easier to drive at the limit. A higher horsepower RWD car will put power down better with taller rear tire sidewalls.
03-25-2009, 08:26 AM
#882
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Well... as always, it depends. The advantages you list above are true for shorter sidewall tires but they are not as great as many people make them out to be. And there are advantages for taller sidewall tires.
Tire OD affects gearing and, depending on what you're doing (road racing in this context) sometimes shorter gearing will put the car in a bad spot (engine rpm) for acceleration out of an important corner. Taller sidewalls are also more forgiving under hard braking and give a broader slip angle curve in the corners making it easier to drive at the limit. A higher horsepower RWD car will put power down better with taller rear tire sidewalls.
Tire OD affects gearing and, depending on what you're doing (road racing in this context) sometimes shorter gearing will put the car in a bad spot (engine rpm) for acceleration out of an important corner. Taller sidewalls are also more forgiving under hard braking and give a broader slip angle curve in the corners making it easier to drive at the limit. A higher horsepower RWD car will put power down better with taller rear tire sidewalls.
i was thinking a stiff sidewall and short sidewall would be more prone to slide out from under you. but i see alot of the newer cars today like the (R8) use a smaller sidewall 235/30/19 and 305/30/19. so i am probably wrong in this thinking
either way, i am sure the R888 are a much better improvement over the michelin PS2 
03-25-2009, 04:54 PM
#883
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cornering was my main concern with the shorter sidewall. i was always under the impression that a taller tire (more sidewall ) would maybe flex/give more when cornering. i was thinking a stiff sidewall and short sidewall would be more prone to slide out from under you. but i see alot of the newer cars today like the (R8) use a smaller sidewall 235/30/19 and 305/30/19. so i am probably wrong in this thinking either way, i am sure the R888 are a much better improvement over the michelin PS2
i was thinking a stiff sidewall and short sidewall would be more prone to slide out from under you. but i see alot of the newer cars today like the (R8) use a smaller sidewall 235/30/19 and 305/30/19. so i am probably wrong in this thinking either way, i am sure the R888 are a much better improvement over the michelin PS2 you are on time to buy a second set of tires and go for higher sidewall if you feel that the tires are "snapping" away...
03-31-2009, 08:21 AM
#885
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H4LP! Wheel/Tire question...not what you think!
So yesterday I woke up to this:
Reference thread: https://my350z.com/forum/mid-atlanti...e-morning.html
...my adjuster just came out and they are cutting me a fairly large sum of money.
My question is:
What wheel/tire combonation can I buy and STILL be in BS class for autox. This is my first year and I don't want to heavily mod my vehicle and would like to learn how to use my vehicle in it's stock form...or damn close to it. Stock wheel combo + labor = $8800...
Any help will be greatly appreciated.
v/r
Johnny
Reference thread: https://my350z.com/forum/mid-atlanti...e-morning.html
...my adjuster just came out and they are cutting me a fairly large sum of money.
My question is:
What wheel/tire combonation can I buy and STILL be in BS class for autox. This is my first year and I don't want to heavily mod my vehicle and would like to learn how to use my vehicle in it's stock form...or damn close to it. Stock wheel combo + labor = $8800...
Any help will be greatly appreciated.
v/r
Johnny
03-31-2009, 09:41 AM
#886
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So yesterday I woke up to this:
[IMG]http://i32.photobucket.com/albums/d41/johnnyis300/1238418100741.jpg[IMG]
Reference thread: https://my350z.com/forum/mid-atlanti...e-morning.html
...my adjuster just came out and they are cutting me a fairly large sum of money.
My question is:
What wheel/tire combonation can I buy and STILL be in BS class for autox. This is my first year and I don't want to heavily mod my vehicle and would like to learn how to use my vehicle in it's stock form...or damn close to it. Stock wheel combo + labor = $8800...
Any help will be greatly appreciated.
v/r
Johnny
[IMG]http://i32.photobucket.com/albums/d41/johnnyis300/1238418100741.jpg[IMG]
Reference thread: https://my350z.com/forum/mid-atlanti...e-morning.html
...my adjuster just came out and they are cutting me a fairly large sum of money.
My question is:
What wheel/tire combonation can I buy and STILL be in BS class for autox. This is my first year and I don't want to heavily mod my vehicle and would like to learn how to use my vehicle in it's stock form...or damn close to it. Stock wheel combo + labor = $8800...
Any help will be greatly appreciated.
v/r
Johnny
can someone steal my wheels please...
what insurance company are you with?
Last edited by warmmilk; 03-31-2009 at 09:47 AM.
03-31-2009, 09:51 AM
#888
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holy crap blessing in disguise! thats nuts, why dont you look for a set of stock wheels for sale around here and put 8k towards paying off the car or save it? thats what i would do...
03-31-2009, 02:11 PM
#890
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I'll sell you my wheels and tires for only $8,500. Ya know, just to help out a fellow autocrosser... that way, you'll still have $300 to put towards other stuff!
03-31-2009, 02:56 PM
#892
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03-31-2009, 03:29 PM
#894
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I've been searching for OEM Track wheels...but I haven't found any.
I'm still searching. I take it the 06 OEM wheels clear Brembos? Forgive my ignorance, please. Also, will they weigh different and if so, would it be negligible performance-wise?
03-31-2009, 05:01 PM
#897
I'm confused or maybe didn't read this whole thing properly. You have an '03 Z, apparently a Track model since it has the Brembos. Not sure why you're looking at 06 wheels.
Do what I did. I use the OEM track wheels for autocrossing with some grippy tires like the Bridgestone RE-11s (formerly RE-01s), Falken RT-615, etc. You should be able to find a set of 03-05 OEM track wheels for around $500-$600. Tires will run you about $1000 to $1200.
The rest of that money could be spent on some really good wheels and tires for the street.
03-31-2009, 05:09 PM
#898
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I'm confused or maybe didn't read this whole thing properly. You have an '03 Z, apparently a Track model since it has the Brembos. Not sure why you're looking at 06 wheels.
Do what I did. I use the OEM track wheels for autocrossing with some grippy tires like the Bridgestone RE-11s (formerly RE-01s), Falken RT-615, etc. You should be able to find a set of 03-05 OEM track wheels for around $500-$600. Tires will run you about $1000 to $1200.
The rest of that money could be spent on some really good wheels and tires for the street.
Do what I did. I use the OEM track wheels for autocrossing with some grippy tires like the Bridgestone RE-11s (formerly RE-01s), Falken RT-615, etc. You should be able to find a set of 03-05 OEM track wheels for around $500-$600. Tires will run you about $1000 to $1200.
The rest of that money could be spent on some really good wheels and tires for the street.
03-31-2009, 05:16 PM
#899
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After a quick search, the only wheels I found that are BS legal other then the Enkei RPF1's are these new OZ Racing wheels. OZ Alleggerita HLT They come in a crap load of colors! The Enkei's are about a half a pound lighter then the OZ's.
Last edited by Ruff Z; 03-31-2009 at 05:20 PM.
03-31-2009, 06:28 PM
#900
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I'm confused or maybe didn't read this whole thing properly. You have an '03 Z, apparently a Track model since it has the Brembos. Not sure why you're looking at 06 wheels.
Do what I did. I use the OEM track wheels for autocrossing with some grippy tires like the Bridgestone RE-11s (formerly RE-01s), Falken RT-615, etc. You should be able to find a set of 03-05 OEM track wheels for around $500-$600. Tires will run you about $1000 to $1200.
The rest of that money could be spent on some really good wheels and tires for the street.
Do what I did. I use the OEM track wheels for autocrossing with some grippy tires like the Bridgestone RE-11s (formerly RE-01s), Falken RT-615, etc. You should be able to find a set of 03-05 OEM track wheels for around $500-$600. Tires will run you about $1000 to $1200.
The rest of that money could be spent on some really good wheels and tires for the street.
As of right now, I'm looking at some RPF1's and Dunlop Direzza Z1 Star Specs.