would resetting the ECU work in RXP's case?

 

Tried 2 different ways of resetting on the forum somewhere.
Didn't help.

 

Sco answered that

 

I'm still running this setup with absolutely nothing out of the ordinary to report.

 

It is not the tread pattern that makes the diff. It is the "slip angle" that the dsc senses as something wrong. Using the same tire in a different size will be ok to a point as wildcard prooves. Using a different brand of tire will toss a curve (pun intended) to the car. It will also do it to the driver. Maybe what you feel is not the dsc but the tire diff yourself. You will feel it like one end has low pressure.

In fact the more I think about it this is probably what is happening. You are more sensitive then the computer. Staggering the tire size is a long used trick with rear drive cars. I think with added power this is going to be nessasary anyhow.

The only way to know for sure is to take a bunch of tires and wheels ans two or three cars to the track.

 

Driving with staggered tires of different tread pattern feels like crap and extremely unsafe.

The car felt unbalanced and felt like it rolled around alot. Does that have anything to do with the different sidewall stiffness etc on the tires?

 

Yes, the construction changes the slip angle. Not to say one type construction is better then the other just if they are different you will feel it if you drive.

 

Didnt someone mention tyre pressure before. I am sure that affects things. Especially when you have different wall heights.

Andrew

 

A very old article but not the tyre configuration they are running:

http://www.webwombat.com.au/motoring...x8-extreme.htm

Andrew

 

Greetings All,
Could I ask those with Nankangs where you got them from - was it a chain like Bob Jane, Jax, or one of the other big mobs ?

I'm on the NSW Central Coast and we have most or all of the major players here but it could take a while on the phone to locate tyres so any help with seller would be appreciated.

I looked on the Nankang web site but couldn't find a list of stockists anywhere.

I was told the other day by a mechanic issuing me a blue slip for the RX-8 (long story - will share soon !) that our front tyres are beginning to scrub on the inside and are only just legal (it's at 29,500kms) so I might as well change them all and Nankangs are looking like the replacement.

Thanks again,
Jeffneil

 

both places have nahkang tyres.... and im 99.99% sure that they would ship them australia-wide

http://www.agrtyres.com.au/index.asp

http://www.tempetyres.com.au/products.asp?index=Nankang

 

http://www.paylesstyres.com

 

I got a set for the wifes '6 from a Bridgestone franchise.

 

Got mine from Jax. No-one seems to have trouble ordering them.

 

Wildcard, I am nearly ready to order my new tyres after the last track day. I am really curious about these tyres in the wet. Hows the weather been up there recently? Able to give some feedback on wet weather handing?

 

I put 4 x 235's on mine a few weeks ago now, and all OK. Hit a few big puddles at highway speeds, and no probs.

 

Are they 235/40's? or 45's ? do you find a difference with the 235's?

 

Sorry but I can't offer you anything. I bought myself a ****-box daily driver when I got here and as a result I haven't driven the RX-8 in the wet yet. Actually, I haven't driven it at all for almost a month!

 

Sounding dire. Did you also miss out on blowing the crap out of that heroin boat? - looked like fun. Don't worry if you're not allowed to say.

oops, I'm OT again.

So, how are those Nakangs in the wet...anybody?

 

Hows that...A bloody SC'ed RX-8 and its sitting in a garage!

 

Hymee? Are you around? Are your new tyres 40? or 45 profile? do you find a difference with the 235's performance/handling wise?

Andrew

 

Andrew, they'd have to be 40's. It's a common size used on HSVs and FPVs, that's why the price is always pretty good for them

 

Not having a go, just pointing out that its not necessarily an obvious answer

Rim Size | Width | Profile | Rolling Radius
18 225 45 659mm
18 235 45 669mm
18 235 40 645mm
18 245 40 653mm

When you consider that you are allowed a 14mm margin on the Rolling Radius, it looks to me to be an even bet on 40(-14mm)/45(+10mm) in the 235s but 45's would be closer.

But for my money the 245/40's are a closer match (-6mm).

All of these are allowable on the 8" rim.

Andrew

 

235/40 ZR 95W

Cheers,
Hymee.

 

None taken Andrew, it's just those with '03 cars have done all those calcs with the first change of tyres and 235/45s is a pretty rare size in 18", if it exists at all (probably as rare as 225/45 )