new to the rx8 and just got a couple ?'s
#1
new to the rx8 and just got a couple ?'s
hey guys i just got my 8 and i'm wondering if you can fit 17's on it cause i wanna squeeze a lil extra mpg and they don't make fuelmax tires for 18's any ideas or advice i'm only getting 16 mpg overall
#7
i just bought the thing sunday from a local used car dealer it's only been ran hard once and that was a 40 mile trip to another town to do the loan work but it usually gets putted around occassional blast between lights i'm trying to figure out which fuel does best i got 15 on 93 octane, 18 on 87 and i'm trying 89 now it's an 04 6spd. i dont think it has the new ecu flash do they really help
#9
I think you bought the wrong car if you want good gas mileage. It's not really possible. As you can see my MPG is all over the place depending on how she is feeling that week
#10
yea but i've been reading you guys getting like 20's as long as i'm 18 or over i'm happy i mean i came from an f150 lightning so i'm used to crap mpg
and bigbacon where did you get the engine cover done i love it
and bigbacon where did you get the engine cover done i love it
#11
i just bought the thing sunday from a local used car dealer it's only been ran hard once and that was a 40 mile trip to another town to do the loan work but it usually gets putted around occassional blast between lights i'm trying to figure out which fuel does best i got 15 on 93 octane, 18 on 87 and i'm trying 89 now it's an 04 6spd. i dont think it has the new ecu flash do they really help
As for your questions, here my take. 18-20 mpg is about what you can expect for a properly running RX8. The performance decrease that you will see with the fuel max tires will make getting those tires not worth it. With that said, running a good set of 17's can and has been done with great results.
You should make sure that the car is up to date on its ECU flashes. I would not recomend running regular, or ever mid grade fuel, however there are some here who have. Something to think about is the ignition system on our car needs frequent replacment (plugs and coils every 30K mi is a good rule of thumb).
And finally, remember that e red line a day keeps the engine running well. Just be sure to warm it up first. Do some reading here, post up your milage if you have any more questions (as it will help with the answers) and have fun with your new car.
If you take care of it, you can have a blast with it. On the other hand this car can quickly become a nightmare if it is not maintained correctly. Heres are a few threads to get you started.
Cumulative Gas Mileage Thread
Technical Service Bulletins (TSBs) and Recalls for RX-8
J, K, L, and M Flash Explanations
RX8 - FAQ for New Owners
Last edited by Solidtrance; 02-26-2010 at 11:08 AM.
#13
#15
^ you should be sure to get MSP16 (Lack of Power_ PCM_01-013-08-1925) which is still a freebie (call Mazda NA if your dealer objects). This "program" upped the OMP apex seal oil injection rate to better assure lubrication and thereby maintain compression over time.
If you already have some loss of power due to compression you may want to get a decarb (Lack of Power DECarb 01-014-08-1924g) but it's cost bearing unless a compression check yields significant lack, which would be grounds for a new (reman) engine if you're still within the 8/100k drivetrain warranty.
Finishlineperformance.com kindly hosts all the MSP/TSB's so take a look for your particular issues, if any.
That's all I'm willing to input for you since you gave us no info other than '04.
If you already have some loss of power due to compression you may want to get a decarb (Lack of Power DECarb 01-014-08-1924g) but it's cost bearing unless a compression check yields significant lack, which would be grounds for a new (reman) engine if you're still within the 8/100k drivetrain warranty.
Finishlineperformance.com kindly hosts all the MSP/TSB's so take a look for your particular issues, if any.
That's all I'm willing to input for you since you gave us no info other than '04.
#16
What Huey and others (myself included) are suggesting is this. You don't need us to answer your questions. You need to go find the answers yourself. It will make you a more informed owner, and with this car you need to be informed. Its a great car, but you need to know what you are doing or else you are rolling the dice with a number of potential issues. Read the stickies, search, find as much info as you can. At the end of the day its your car and you are the one that will end up at the side of the road with a big repair bill if you don't take proper care of it. Good luck.
#18
He wants to put Goodyear FuelMax tires on his car... 65,000 mile low rolling resistance tires on a high performance sports car.
And for what? A 4% average decrease in fuel costs.
LET'S DO THE MATH!!!
If you drive 10,000 miles per year, and you get 16mpg average, your car consumes 625 gallons of gas per year. Going off a price $3 a gallon for super unleaded, you spend $1875 in gas per year. What's 4% of $1875?
$75
So to save $75 per year, you're going to go out and buy new 17" rims and put crap all-season low-rolling-resistance tires that don't grip for ****. Gut your car of its amazing handling prowess for what?
$75
Way to go. Massive fail.
#19
Did anybody actually read the opening post?
He wants to put Goodyear FuelMax tires on his car... 65,000 mile low rolling resistance tires on a high performance sports car.
And for what? A 4% average decrease in fuel costs.
LET'S DO THE MATH!!!
If you drive 10,000 miles per year, and you get 16mpg average, your car consumes 625 gallons of gas per year. Going off a price $3 a gallon for super unleaded, you spend $1875 in gas per year. What's 4% of $1875?
$75
So to save $75 per year, you're going to go out and buy new 17" rims and put crap all-season low-rolling-resistance tires that don't grip for ****. Gut your car of its amazing handling prowess for what?
$75
Way to go. Massive fail.
He wants to put Goodyear FuelMax tires on his car... 65,000 mile low rolling resistance tires on a high performance sports car.
And for what? A 4% average decrease in fuel costs.
LET'S DO THE MATH!!!
If you drive 10,000 miles per year, and you get 16mpg average, your car consumes 625 gallons of gas per year. Going off a price $3 a gallon for super unleaded, you spend $1875 in gas per year. What's 4% of $1875?
$75
So to save $75 per year, you're going to go out and buy new 17" rims and put crap all-season low-rolling-resistance tires that don't grip for ****. Gut your car of its amazing handling prowess for what?
$75
Way to go. Massive fail.
You should have posted this before you purchased. There are hundreds of people here who would have strongly discouraged you from buying an RX-8. You and the car are not going to have a happy relationship. I can tell things just don't "click".
#20
well like i stated it was a theory i've never used said tires didnt really look at the specs on them i was just wondering if 17's would fit because 17 inch tires are cheaper anyway and i can actually find them around my area without ordering them.
#21
Last edited by Solidtrance; 02-28-2010 at 10:59 AM.
#22
Here you go. DIY: how to use the search function of the rx8club.com forum . This is not a joke. read the DIY, it will help you.
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