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Old 04-10-2007, 01:20 PM   #1
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Handling-wind and curvacious roads

Just bought a basic model hatch back and aside from the racket and poor handling I really like this little beast. Has anyone made significant improvements to suspension (ie. shocks, springs, anti roll stabilizer/wheels/tires) that actually help keep you on the road in the wind and curves? I figure that maybe tossing the 14" rims and tires alone might make a noteable improvement. Am I kidding myself?
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Old 04-10-2007, 01:23 PM   #2
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Welcome!
Look and search around, there's been plenty of posts on the subject
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Old 04-10-2007, 08:07 PM   #3
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I posted a thread not to long ago, from the advice I got it seemed like wheels/tires #1, lowering and springs #2, and on and on...with the general consensus being you can tame the side wind problem, but not totally get rid of it. I have springs on order. I put max allowable psi in the tires and that made a major improvement, so I would think the advice on wheels/tires is probably correct. Other than that I'm getting more used to it, but have no hands on knowledge so listen to the people who've been there.
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Old 04-13-2007, 02:56 AM   #4
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OK, so wheels and tires first. Even with the hideous stock Bridgestone 14's, 39 psi instead of the dealer's 29 made some difference though, but it's only just a start. What I don't get though is buy a new car and why do we have to do all this shit? This is Toyota's job isn't it? We're not talking here low tech 1950's VW bugs or ... or are we?

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Old 04-13-2007, 03:06 AM   #5
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I'd say it's because Toyota prepares these cars for the widest audience, which requires them to tune the cars for comfort and low maintenance.
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Old 04-13-2007, 08:24 AM   #6
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What I don't get though is buy a new car and why do we have to do all this shit? This is Toyota's job isn't it? We're not talking here low tech 1950's VW bugs or ... or are we?

Because if Toyota did it for you, your Yaris would have costed $15k.

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Old 04-15-2007, 01:25 AM   #7
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Poor Handling ....YARIS ..... not possible . The yaris/vitz handles beautifully ....stock . It just gets better with specifically designed parts :) I had no problems keeping up with the Evo's , Sti's , Elise's , Rx-7's at the dragon . Can't wait to spank more ass with my specifically designed parts this summer .......:)
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Old 04-15-2007, 11:40 AM   #8
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I would agree with you that the yaris is not poor handling. To claim you had no problem keeping up with Evo's, STI's or the Elise is questionable. I have a WRX and I have driven a STI the lesser handling of those three cars. The yaris is not even in the same class. The Yaris sedan (.79) matches the wrx (.79) on the skid pad and comes close on the slalom (Road and Track test). Yaris 63.7mph and the wrx 64.8. Not close on the other cars. My guess is the other drivers were not or did not know how to push the cars performance.
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Old 04-15-2007, 12:10 PM   #9
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Poor handling?

This car handles great in conditions for which it was designed. City....great turns on a dime. Curves....great. Highway.....little under powered but handles great. Freeway...no trouble noted. Racing...I wouldn't expect it to be a great power house.
Noise: If the road is in good conditions it is fairly quiet. If the road is cement and rough you have some road noise. Turn up the sterio and keep thinking $12500 purchase price and 38 MPG! It is great for what it was designed for.
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Old 04-15-2007, 01:02 PM   #10
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The car just comes on those factory stilts with a ton of body roll. I think that is what is being described as poor handeling.
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Old 04-15-2007, 03:12 PM   #11
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If cost is a concern, follow these steps. #1- Air up tires to max sidewall recommended pressure. #2-Springs. #3-Struts. #4-Tires/wheels. If money is no object, then do it all at once. Your biggest improvement will be tires and wheels.
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Old 04-15-2007, 08:58 PM   #12
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If you ask me for my opinion,it all depends on your tire,if you have a max tire pressure of 44psi,then If found the sweet spot to be 38psi(cold pressure*),thats for overal comfort,gas savings,and stability.I have 50psi max tires,I found that 42.5 to be great for gas,but bad for comfort,so I started using 39,then swithched to 35,then 37,now I think I've found the sweet spot for this width of tire Im using and the load of the car to get all the rubber on the road,but firmly when heated up.
* Tire pressure will rise with temperture,1psi every 10 degree's,so lets say the average temperture is 70,and when the tire is at it optimal temp.say 140 I guess,thats 7psi mor in your tire.

Last edited by eco; 04-15-2007 at 10:48 PM.
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Old 04-15-2007, 09:11 PM   #13
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Well shoot, I finally went to fill up my tires to 40 PSI and wouldnt you know...we had winds of 35 mph and im not sure what the gust were, but you know it had to be like 45 if steady winds were up to 35...even right now it seems calm and its 15/25.
It was great:) i filled up to 40, get on the interstate and the barrier is on my right, everything is giong smooth. Then the barrier ends just as a huge gust hits. Suddenly my car is slammed and I get pushed several feet to the right and nearly into the other lane:) couldnt really gauge the effectiveness today:)
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Old 04-15-2007, 10:47 PM   #14
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Sorry to hear that.
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Old 04-16-2007, 12:12 AM   #15
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Well shoot, I finally went to fill up my tires to 40 PSI and wouldnt you know...we had winds of 35 mph and im not sure what the gust were, but you know it had to be like 45 if steady winds were up to 35...even right now it seems calm and its 15/25.
It was great:) i filled up to 40, get on the interstate and the barrier is on my right, everything is giong smooth. Then the barrier ends just as a huge gust hits. Suddenly my car is slammed and I get pushed several feet to the right and nearly into the other lane:) couldnt really gauge the effectiveness today:)
That high air pressure you are running greatly decreases the stability of your car, one of the many reasons the car was engineer with 32psi in the tires for a reason, so if you are having stability issues, first thing I would do is drop the pressure down to the correct pressure
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Old 04-16-2007, 05:15 PM   #16
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new rims and tires, big big difference.
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Old 04-16-2007, 09:34 PM   #17
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That high air pressure you are running greatly decreases the stability of your car, one of the many reasons the car was engineer with 32psi in the tires for a reason, so if you are having stability issues, first thing I would do is drop the pressure down to the correct pressure
Hey, just to start out, this is def not a personal attack against you, but I would really like you to support that with some data or some logical explanation, rather than just having me take your word on it. In particular because of this thread
http://www.yarisworld.com/forums/showthread.php?t=5004
where we have people talkinga bout 60psi and such.....

Anyway I did some reasearch though now im doing more research and I cant seem to find anything that supports using max pressure. Anwyay, alot of people say that toyota speced their tires for comfort and performance, however, by pumping them up a littl emore you improve performance and decrease comfort--just as they did with spring, etc...and so that is the general premise I came to believe for a little while. Though im not sure it is true. In further defense of that position everyone always stresses never to be below recommended pressure. that means that factory recommend pressure is essentially the MINIMUM pressure right? so how could the minimum really be any better than the max? just a thought...

Also, I have had my pressure right at the recommended pressure up until i made that post and I have had a terrible problem with handling...though....

there might be a particular reason.... I went to a dealership a while back and they initially said I had some rough road force and needed a new tire, then they never called me when it was supposed to have come in, i called them. they didnt write down which tire so they retested and said everything is fine, then another dealership said everything is fine, and I just dont have that much time to fuck around with the dealers. Anyway I really want some new fucking tires...lol damn it but stay on topic, join in to that PSI conversation, just dont get caught up on the 60PSI part, im with whatever you have to say in that much at least.
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Old 04-16-2007, 10:22 PM   #18
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We've been over this in another thread, essentially it boild down to this, Toyot recommends 32PSI as a safe, comforatbale pressure. Look on your tire's sidewall, and you will see the maximum pressure that the tire manufacturer recommends, you can pump up to that without problems.

60PSI should only be looked at if you want to stretch every last mile out of your fuel, and the rest of your driving style must follow. So, don't pump to 60PSI and drive fast, that's just a recipe for disaster.

Interesting article for you:

http://news.rgj.com/apps/pbcs.dll/ar...704150326/1247

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