top speed?

My92TaurusP.O.S · #1 12-04-2004, 03:19 AM

I noticed on the mazda web site that on the dash the rx 8 has a digital spedometer. i was just curious what its top speed is? or what its dash top speed would have said? thanx

D3rELiC · #2 12-10-2004, 11:29 AM

arnt they limited at 210km/h ? (~125mph)

drftk1d · #3 12-12-2004, 02:51 PM

no its gotta be higher than that 125? camrys and accords do that.

rodrigo67 · #4 02-07-2005, 10:38 AM

Quote:

Originally Posted by drftk1d

no its gotta be higher than that 125? camrys and accords do that.

There's several debates going on about this over at rx8club.com, but most seem to agree that the manual is limited to 148 mph in 6th gear but some have seen speeds of 148-152 in 5th gear.

I'm not sure what it is for the auto's...

ls1mazda93rx7 · #5 02-07-2005, 08:53 PM

hell ive been in a automatic fd and it hit 165mph, so im thinking the 8 is the same.

rodrigo67 · #6 02-08-2005, 05:56 PM

Quote:

Originally Posted by ls1mazda93rx7

hell ive been in a automatic fd and it hit 165mph, so im thinking the 8 is the same.

No, It will not hit much above 148. The highest I've read about was 158 and he said it was on a downgrade. All achieved in 5th gear, which is the high gear in this car. 6th might pull a few more miles out of it, but it's mostly an overdrive gear and don't expect more then single digit gains from it. The FD is a totally different car made with a totally different performance in mind. It has more hp and less weight. Most likely geared different also. I've never been in one but they are beautifull cars, even by todays standards...

drftk1d · #7 02-09-2005, 04:02 AM

for comparison a s4 n/a fc tops out at around 140 (in 4th).

doctorr · #8 03-08-2005, 03:11 AM

The JDM RX-8 is limited, but there is no limiter on US models. Top gear on a dyno will get you well over 180mph.
The un-modified real world top speed is about 150mph, the car wants to go faster in 5th, and redlines the tach, but if you use sixth, there is just not enough grunt and you lose speed.
If you go by the digital speedo, top speed would be 999mph, right?
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doc

Laurens · #9 03-14-2005, 06:32 AM

mine will go 235km/h+
But I've got a euro spec. RX8 HP

nordicrx8 · #10 03-30-2005, 10:43 AM

I have a US spec 2004 RX8 that I drive in Europe. Last weekend I hit 130 MPH on the Autobahn and it wasn't even breathing hard, I'm sure I could have gotten well over 140/150.

93MR2na · #11 04-08-2005, 01:55 PM

I Thought it was limited at 149.

ccasmoe00 · #12 09-10-2005, 04:54 PM

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FDTT · #13 09-15-2005, 09:28 PM

RX8 top speed is 150ish.
On a dyno, sure you can get to 180 but the car is not going that fast, you just are turning rollers at a low resistance with no account for actual friction of road surface, drag coefficient ect ect.

But really, who cares how fast they can go. There not top speed cars, its all about how fast you can corner.

drftk1d · #14 09-16-2005, 12:10 PM

i think a turbo rx8 would have better stability (with stock aero) than an rx7, by virtue of a more rigid structure and longer wheelbase. am i right?

FDTT · #15 09-16-2005, 02:09 PM

When i teast drove the car befiore tuning and the addition of a few othere parts it did not feel stable at high speeds. It felt very twitchie.
The FD feels rock solid at high speed as the hole car acts like a wing creating down force. With some adjustments to thes suspention we should be able to sold the problems it was showing.

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