Jump to content
SAU Community

Recommended Posts

Hi everyone,

This is going to sound very stupid, I did google it but couldn't find much info... My front Tyres are directional Tyres and I've just found out they are in the wrong direction! I'm not going to have a chance to fix it until the weekend BUT what can actually happen of you have the tyres going in the wrong direction?

I noticed a few days ago the car was understeering in the wet when i was changing gears when I was driving in a straight line, hence why I thought I'd check them... Would the tyres going in the wrong direction be the cause of the car understeering?

Thanks :)

Link to comment
https://www.sau.com.au/forums/topic/369544-directional-tyres/
Share on other sites

Hi everyone,

This is going to sound very stupid, I did google it but couldn't find much info... My front Tyres are directional Tyres and I've just found out they are in the wrong direction! I'm not going to have a chance to fix it until the weekend BUT what can actually happen of you have the tyres going in the wrong direction?

I noticed a few days ago the car was understeering in the wet when i was changing gears when I was driving in a straight line, hence why I thought I'd check them... Would the tyres going in the wrong direction be the cause of the car understeering?

Thanks :)

If your tyres are directional either driving or steering, they will essentially be "sucking up" water instead of dispersing it. Now there is no need to have the tyres removed off the rim to correct the problem... it should be as easy as swapping rims from either side of the car which will reverse the tread pattern direction to then be the correct way!

This is going to sound very stupid

It's not as 'stupid' a question as you might think... I have seen many cars on the road that have directional tyres on backwards (I always have a bit of a chuckle to myself).

Directional tread patterns are essentially only designed to work properly when they rotate in the right direction... Although they will still disperse water and provide dry grip they won't work anywhere near as well when rolling backwards... Especially on wet roads.

They probably are to blame for your car under-steering in the wet because at driving speeds (anything over about 30kmh) they aren't able to channel water out of the tread grooves efficiently enough and the directional tread sipes aren't opening up to provide extra leading edges to cut through the layer of water and grip the road underneath.

As Global_warmer suggested: just swap the wheels from side to side and you should find that they'll perform much better. :)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • The attached document is fine. I just downloaded & opened it.
    • Hello, sorry for being late to join the discussion, but my clock just died on me.   Ive tried to look at Michaels digital clock repair.docx and it doesnt work maybe the file has expired.   Please let me know if you can re upload it or take some youtube videos to show us how to get the clock installed? thanks
    • I thought that might be the case, thats what I'll start saving for. Thanks for the info 
    • Ps i found the below forum and it seems to be the same scenario Im dealing with. Going to check my ECU coolant temp wire tomorrow    From NICOclub forum: s1 RB25det flooding at start up Thu Apr 11, 2013 7:23 am I am completely lost on this. Car ran perfectly fine when I parked it at the end of the year. I took the engine out and painted the engine bay, and put a fuel cell with an inline walbro 255 instead of the in tank unit I had last year. After reinstalling everything, the engine floods when the fuel pump primes. if i pull the fuel pump fuse it'll start, and as soon as I put the fuse back in it starts running ridiculously rich. I checked the tps voltage, and its fine. Cleaned the maf as it had some dust from sitting on a shelf all winter, fuel pressure is correct while running, but wont fire until there is less than 5psi in the lines. The fuel lines are run correctly. I have found a few threads with the same problem but no actual explanation of what fixed it, the threads just ended. Any help would be appreciated. Rb25det s1 walbro255 fuel pump nismo fpr holset hx35 turbo fmic 3" exhaust freddy intake manifold q45tb q45 maf   Re: s1 RB25det flooding at start up Fri Apr 12, 2013 5:07 am No, I didn't. I found the problem though. There was a break in one of the ecu coolant temp sensor wires. Once it was repaired it fired right up with no problems. I would have never thought a non working coolant temp sensor would have caused such an issue.
    • Hi sorry late reply I didnt get a chance to take any pics (my mechanics on the other side of the city) but the plugs were fouled from being too rich. I noticed the MAF wasn't genuine, so I replaced it with a genuine green label unit. I also swapped in a different ignitor, but the issue remains. I've narrowed it down a bit now: - If I unplug and reconnect the fuel lines and install fresh spark plugs, the car starts right up and runs perfectly. Took it around the block with no issues - As soon as I shut it off and try to restart, it won't start again - Fuel pressure while cranking is steady around 40 psi, injectors have good spray, return line is clear, and the FPR vacuum is working. It just seems like it's getting flooded after the first start I unplugged coolant sensors to see if its related to ECU flooding but that didnt make a difference. Im thinking its related to this because this issue only started happening after fixing coolant leaks and replacing the bottom part of the stock manifolds coolant pipe. My mechanic took off the inlet to get to get to do these repairs. My mechanics actually just an old mate who's retired now so ill be taking it to a different mechanic who i know has exp with RBs to see if they find anything. If you have any ideas please send em lll give it a try. Ive tried other things like swapping the injectors, fuel rail, different fuel pressure regs, different ignitor, spark plugs, comp test and MAF but the same issue persists.
×
×
  • Create New...