semi confused on what peoples 1st and 2nd gear top at
05-15-2009, 02:15 PM
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semi confused on what peoples 1st and 2nd gear top at
i have an 04 rx8 vr gt ive had it for a few years now just hit 30k anyways was watching peoples youtubes video and i was seeing 1st topping at 38-40 and 2nd topping at 62-66 well my car is bone stock and my 1st tops at 45 and 2nd is 77 was just curious on what you guys are getting
05-15-2009, 02:27 PM
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I'd guess that your 8 has an automatic transmission. The 04's w/ automatic transmissions have a little different engine in them(4 intake ports vs 6), and don't make as much power.
from wikipedia...
"4-speed automatic tuned to 141 kW (192 PS; 189 hp) in some markets, while the U.S. automatic is stated to deliver 158 kW (215 PS; 212 hp)."
from wikipedia...
"4-speed automatic tuned to 141 kW (192 PS; 189 hp) in some markets, while the U.S. automatic is stated to deliver 158 kW (215 PS; 212 hp)."
05-15-2009, 02:41 PM
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well, unless someone before you put in a setup with a different final drive ratio(I have never heard of a lower ratio though...), then clearly you have non oem tires with a larger diameter than stock. Stock diameter tires give 40 mph at 9000 in first and about 66 mph at 9000 in second, and about 90 mph at 9000 in third.
05-15-2009, 02:48 PM
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well, unless someone before you put in a setup with a different final drive ratio(I have never heard of a lower ratio though...), then clearly you have non oem tires with a larger diameter than stock. Stock diameter tires give 40 mph at 9000 in first and about 66 mph at 9000 in second, and about 90 mph at 9000 in third.
05-15-2009, 02:49 PM
#11
It's a Cavalier
i have an 04 rx8 vr gt ive had it for a few years now just hit 30k anyways was watching peoples youtubes video and i was seeing 1st topping at 38-40 and 2nd topping at 62-66 well my car is bone stock and my 1st tops at 45 and 2nd is 77 was just curious on what you guys are getting
So lucky.
05-15-2009, 02:51 PM
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hrmmm i put a set of cooper zeons all way around they are 245-45-18 wheels are stock but compared to stock tires i have more traction grip and car seems a bit quicker
05-15-2009, 02:53 PM
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Haha dude you need to learn to think a little bit...
stock tires are 225/45, so going to 245/45 will OBVIOUSLY mean a larger diameter....
wow
05-15-2009, 02:55 PM
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05-15-2009, 03:10 PM
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05-15-2009, 03:15 PM
#19
BUT your speedo does not know you have bigger tyres on and only reads wheel speed . Which for a given engine rpm will remain the same .
So - the max speed in each gear as read by the speedo stays the same no matter what tyre size you have on ..................................
Last edited by Brettus; 05-15-2009 at 03:25 PM.
05-15-2009, 03:21 PM
#21
It's a Cavalier
The difference between going from a 225/45-18 and a 245/45-18 results in ONLY a2.7% difference in rolling circumference, NOWHERE NEAR the error he says he's seeing...
It also means that by going to a LARGER tire, the speedometer will actually read 2.7% SLOWER. When the speedometer reads 60mph, you're actually going 61.6mph.
Why don't YOU think before calling somebody else stupid?
I do realize he came back and said the tires were the stock size.
05-15-2009, 03:25 PM
#22
It's a Cavalier
and larger diameter means you will be going faster ....................
BUT your speedo does not know you have bigger tyres on and only reads wheel speed . Which for a given engine rpm will remain the same .
So - the number on your speedo stays the same no matter what tyre size you have on ..................................
BUT your speedo does not know you have bigger tyres on and only reads wheel speed . Which for a given engine rpm will remain the same .
So - the number on your speedo stays the same no matter what tyre size you have on ..................................
Here's a handy calculator for it
http://www.miata.net/garage/tirecalc.html
05-15-2009, 03:30 PM
#23
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dam
But to answer the whole semi confused
MT for me redlining/fuel cut off for first is about 39mph ive seen 42 once.
Second Gear, the few times I've redlined first to redline second I got like 69? I believe it was.
But if you have an AT you may see high 40's to redline though I can not speak for sure
Also make sure the youtube videos are in mph not KPH
05-15-2009, 03:34 PM
#24
It's a Cavalier
i have an 04 rx8 vr gt ive had it for a few years now just hit 30k anyways was watching peoples youtubes video and i was seeing 1st topping at 38-40 and 2nd topping at 62-66 well my car is bone stock and my 1st tops at 45 and 2nd is 77 was just curious on what you guys are getting
Oh, and welcome to forum!
05-15-2009, 03:40 PM
#25
It's a Cavalier
65mph = 105kph
Good thought, but he would be telling us he's shifting out of 2nd at 105
Everybody look at the R&T data panel under "Drivetrain"! Learn a little about your car!
http://www.roadandtrack.com/assets/d...2003171557.pdf
Good thought, but he would be telling us he's shifting out of 2nd at 105
Everybody look at the R&T data panel under "Drivetrain"! Learn a little about your car!
http://www.roadandtrack.com/assets/d...2003171557.pdf