Rollover speed - Toyota Yaris Forums

Snyprwlf47 · 12-08-2008, 05:26 AM

I wanted to ask if anybody knew what the max amount of lateral force and or speed can the stock Yaris achieve without rolling over?

CASTREX · 12-08-2008, 09:55 AM

I would say there is no exact answer to that question.

It depends on a lot of factors.

Road
Tires
Wind
Angle of the curve
Suspension
Driver!

.......

Loren · 12-08-2008, 04:08 PM

I've pulled average .998 G's (two laps each direction, 200' asphalt skidpad). That's on a custom tuned coilover suspension (K-Sport + custom rear springs + TRD swaybar + alignment) and really grippy street tires (195/55-15 Dunlop Direzza Sport Z1 Star Spec). If I put a set of competition tires (slicks) on the car, I could easily do 1.1 G's or more.

But, that's really no answer to your question. Castrex gave a more correct answer.

If you go out and do something stupid, you can get any car to go over... especially one with a soft suspension.

The single most important factor in the equation is the driver. Your Yaris ain't gonna roll itself... nor is it going to get around a corner really fast a pull a lot of G's by itself.

In a steady-state turn (like a skidpad with a smooth driver), a stock Yaris is going to understeer before it rolls over. The front tires will simply give up at a certain speed and you'll start pushing outward in the turn. The only way to get the car to roll over is to introduce another variable that will trip up the car. Something like a hole or a curb or big chunk of something in the road... or simply a dumb driver input, like yanking the wheel in the opposite direction and then back again.

cali yaris · 12-08-2008, 05:15 PM

Quote:

yanking the wheel in the opposite direction and then back again.

BINGO -- that will roll your car for sure.

ddongbap · 12-08-2008, 06:56 PM

Run some plastic tires with no grip. You'll never worry about rolling over

ddongbap · 12-08-2008, 06:57 PM

Quote:

Originally Posted by Loren

If you go out and do something stupid, you can get any car to go over... especially one with a soft suspension.

The single most important factor in the equation is the driver. Your Yaris ain't gonna roll itself... nor is it going to get around a corner really fast a pull a lot of G's by itself.

What are you talking about? My Yaris got mad at me last night, and pulled a 180 in my parking spot. Weird.

RacerFreakXXX · 12-08-2008, 08:50 PM

it really is... i rooled over a 240 that was 2" off the ground cuz it went off the side of a hill... it really depends on the road conditions, tires, suspension, and how you make the turn. I don't think you'd be able to get the cur up to a high enough speed and cut the wheel to make it flip over. If it was stock maybe if you were doing 100+ and ripped the ebrake it might.

natethegreat38 · 12-08-2008, 11:00 PM

Quote:

Originally Posted by ddongbap

What are you talking about? My Yaris got mad at me last night, and pulled a 180 in my parking spot. Weird.

ddongbap · 12-09-2008, 12:07 AM

Quote:

Originally Posted by natethegreat38

What, urs never did that?

natethegreat38 · 12-09-2008, 02:19 PM

no, but it yelled at me once for farting in it

cali yaris · 12-09-2008, 02:55 PM

Quote:

I don't think you'd be able to get the cur up to a high enough speed and cut the wheel to make it flip over.

I'm positive that I could -- but I think it's something we won't know for sure, 'cause I'm not trying to do that on purpose!

natethegreat38 · 12-09-2008, 03:08 PM

snyper- why would you want to know this anyhow? Are you driving that aggressively? Who are you planning on running away from?

ddongbap · 12-09-2008, 07:03 PM

The Police. Who else is worthy of being run away from?

RacerFreakXXX · 12-09-2008, 09:11 PM

Quote:

Originally Posted by cali yaris

I'm positive that I could -- but I think it's something we won't know for sure, 'cause I'm not trying to do that on purpose!

yea but you are also turbo

and I think I would die a little inside if you did

ddongbap · 12-09-2008, 10:27 PM

Quote:

Originally Posted by RacerFreakXXX

yea but you are also turbo

and I think I would die a little inside if you did

A stock Yaris can hit 100+ mph. Thats plenty fast to flip something over. If you REALLY wanted to anyways.

RacerFreakXXX · 12-09-2008, 11:27 PM

maybe if you were doing 100 on a downhill sloap and hit a sharp turn and cut the wheel but i've done it at 70 and you just slide

Snyprwlf47 · 12-11-2008, 09:38 PM

Quote:

Originally Posted by ddongbap

The Police. Who else is worthy of being run away from?

-Shifty eyes- I swear I disabled the running lights for good reasons...The only cop around that you shouldn't try to outrun is that damn charger>.<But no I ebrake in those situations... My reason for all of this is that I live in the mountains so most of my races are all acceleration and handling and I would just like to get a general idea of the rollover limit. The only idea of it I have got me in trouble, apparently the Wal-Mart parking lot at midnight isnt a test
track. Thanks for the input though guys

Loren · 12-12-2008, 03:21 PM

If you want to test the handling limits of your car, find an autocross. Here's a good place to start: http://swvrscca.org/

12-08-2008, 05:26 AM	#1
Snyprwlf47 The Martian Drives: 07 Yaris 3dr Join Date: Nov 2008 Location: Cannelton, WV Posts: 208	Rollover speed I wanted to ask if anybody knew what the max amount of lateral force and or speed can the stock Yaris achieve without rolling over? __________________ "The lead car is absolutely unique, except for the one behind it which is identical." – F1 commentator Murray Walker.

12-08-2008, 04:08 PM	#3
Loren What? Drives: 2007 Yaris LB Join Date: Nov 2008 Location: Safety Harbor, FL Posts: 1,006	I've pulled average .998 G's (two laps each direction, 200' asphalt skidpad). That's on a custom tuned coilover suspension (K-Sport + custom rear springs + TRD swaybar + alignment) and really grippy street tires (195/55-15 Dunlop Direzza Sport Z1 Star Spec). If I put a set of competition tires (slicks) on the car, I could easily do 1.1 G's or more. But, that's really no answer to your question. Castrex gave a more correct answer. If you go out and do something stupid, you can get any car to go over... especially one with a soft suspension. The single most important factor in the equation is the driver. Your Yaris ain't gonna roll itself... nor is it going to get around a corner really fast a pull a lot of G's by itself. In a steady-state turn (like a skidpad with a smooth driver), a stock Yaris is going to understeer before it rolls over. The front tires will simply give up at a certain speed and you'll start pushing outward in the turn. The only way to get the car to roll over is to introduce another variable that will trip up the car. Something like a hole or a curb or big chunk of something in the road... or simply a dumb driver input, like yanking the wheel in the opposite direction and then back again. __________________ ----------------------- Loren@InvisibleSun.org -----------------------

12-08-2008, 08:50 PM	#7
RacerFreakXXX JDM Fred View User's Garage Drives: 06 Mazda Miata Join Date: Oct 2008 Location: Somers NY Posts: 787	it really is... i rooled over a 240 that was 2" off the ground cuz it went off the side of a hill... it really depends on the road conditions, tires, suspension, and how you make the turn. I don't think you'd be able to get the cur up to a high enough speed and cut the wheel to make it flip over. If it was stock maybe if you were doing 100+ and ripped the ebrake it might. __________________ 1990 Mazda Miata... I miss my Yaris

12-09-2008, 02:19 PM	#10
natethegreat38 Party like a Barack star Drives: '08 LB MT Join Date: Oct 2008 Location: Cali Posts: 288	no, but it yelled at me once for farting in it __________________ i don't feel like creating another signature, yet. Give it another week...

12-09-2008, 03:08 PM	#12
natethegreat38 Party like a Barack star Drives: '08 LB MT Join Date: Oct 2008 Location: Cali Posts: 288	snyper- why would you want to know this anyhow? Are you driving that aggressively? Who are you planning on running away from? __________________ i don't feel like creating another signature, yet. Give it another week...

12-08-2008, 09:55 AM	#2
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	I would say there is no exact answer to that question. It depends on a lot of factors. Road Tires Wind Angle of the curve Suspension Driver! .......

12-08-2008, 06:56 PM	#5
ddongbap Banned Drives: yw calls me douche and racist. Join Date: Aug 2007 Location: hay Posts: 2,183	Run some plastic tires with no grip. You'll never worry about rolling over

12-09-2008, 07:03 PM	#13
ddongbap Banned Drives: yw calls me douche and racist. Join Date: Aug 2007 Location: hay Posts: 2,183	The Police. Who else is worthy of being run away from?

12-09-2008, 11:27 PM	#16
RacerFreakXXX JDM Fred View User's Garage Drives: 06 Mazda Miata Join Date: Oct 2008 Location: Somers NY Posts: 787	maybe if you were doing 100 on a downhill sloap and hit a sharp turn and cut the wheel but i've done it at 70 and you just slide __________________ 1990 Mazda Miata... I miss my Yaris

12-12-2008, 03:21 PM	#18
Loren What? Drives: 2007 Yaris LB Join Date: Nov 2008 Location: Safety Harbor, FL Posts: 1,006	If you want to test the handling limits of your car, find an autocross. Here's a good place to start: http://swvrscca.org/ __________________ ----------------------- Loren@InvisibleSun.org -----------------------

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