has someone invented this yet? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

rancid240 · 09-29-2004, 05:21 PM

A wheel/tire height calculator that includes stretch when calculating total height?

HyperTek · 09-29-2004, 05:26 PM

???
http://www.miata.net/garage/tirecalc.html

rancid240 · 09-29-2004, 05:29 PM

Quote:

Originally Posted by HyperTek

???
http://www.miata.net/garage/tirecalc.html

That one doesnt factor in stretch.

**mrmephistopheles** · 09-29-2004, 06:20 PM

stretch will differ between manufacturers and tire width. that'd be a damn hard thing to calculate for

Var · 09-29-2004, 06:46 PM

i was thinking the same thing. I wish someone would write a program for that.

KA24DESOneThree · 09-29-2004, 10:25 PM

I wish they wouldn't. That way, people would have to find out the hard way and maybe in all that work, they'd realize that hipari is UGLY.

Equinox · 09-30-2004, 01:48 PM

Why would you really need to calculate for tire stretch? If you have to stretch your tires then the rim width should be the widest part. Just use that measurement for the width. The only measurement that would be slightly off with stretched tires would be the amount of sidewall, but I think this would be fractions of an inch at most.

Chernobyl · 10-01-2004, 02:35 PM

Total height is not affected by sidewall stretch. Have a nice day.

Var · 10-01-2004, 03:26 PM

Quote:

Originally Posted by Chernobyl

Total height is not affected by sidewall stretch. Have a nice day.

I would think it would be..depends on the extent of the stretch doesnt it?

Chernobyl · 10-01-2004, 03:30 PM

Ok, take a dismounted tire and try to squeeze it to a different diameter while keeping it round. I bet you can't do that.

Stretching changes the angle of the sidewall, not the diameter of the tire.

Andrew Bohan · 10-01-2004, 04:25 PM

normal tire |___|
stretched tire \___/
you have to make the sidwalls taller to keep the wheel-to-tread distance the same. otherwise the wheel-to-tread has to be less.
basic geometry

Var · 10-01-2004, 05:18 PM

yes..the shortest distance between two points is a straight line (sidewall facing straight up and down)

When you angle the sidewall outwards, either the sidewalls would have to be taller or it would make the diameter of the tire less.

Chernobyl · 10-01-2004, 07:50 PM

ugh. its hopeless. Go to a tire shop and ask them to show you how a tire beads on a wheel. I'm not gonig to try to explain it further.

Stretching tires will NOT change overall tire diameter. Maybe a nanometer or two...

Var · 10-04-2004, 09:57 AM

Quote:

Originally Posted by Chernobyl

Stretching tires will NOT change overall tire diameter. Maybe a nanometer or two...

So it does change. I didnt say it would change my much, i was thinking a mm or 2, but still. It makes sense that it would be affected.

Zemus · 10-04-2004, 10:15 AM

Hah streaching does change it just a bit. Exp

I had a 215/50/15 on a 7inch wheels, and I had 215/50/15 (same tire) on a 8.5inch wheel and it was quite a bit smaller, Like I could tell by looking at it. Optical illusion... possably, :shrugs: It seems a bit shorter

Var · 10-04-2004, 11:11 AM

What about your speedometer? did it change at all?

09-29-2004, 05:21 PM	#1
rancid240 Post Whore! Join Date: Jan 2002 Location: Irvine CA Posts: 2,770 Trader Rating: (72) Feedback Score: 72 reviews	has someone invented this yet? A wheel/tire height calculator that includes stretch when calculating total height?

09-29-2004, 05:26 PM	#2
HyperTek Post Whore! Join Date: Mar 2003 Location: Cali Posts: 13,224 Trader Rating: (3) Feedback Score: 3 reviews	??? http://www.miata.net/garage/tirecalc.html __________________ Keep it Classy

09-29-2004, 06:46 PM	#5
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	i was thinking the same thing. I wish someone would write a program for that. __________________ Hi

09-30-2004, 01:48 PM	#7
Equinox Zilvia Member Join Date: Nov 2002 Location: San Diego Posts: 290 Trader Rating: (0) Feedback Score: 0 reviews	Why would you really need to calculate for tire stretch? If you have to stretch your tires then the rim width should be the widest part. Just use that measurement for the width. The only measurement that would be slightly off with stretched tires would be the amount of sidewall, but I think this would be fractions of an inch at most. __________________ -Steve http://www.controlledspin.com

10-01-2004, 05:18 PM	#12
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	yes..the shortest distance between two points is a straight line (sidewall facing straight up and down) When you angle the sidewall outwards, either the sidewalls would have to be taller or it would make the diameter of the tire less. __________________ Hi

09-29-2004, 06:20 PM	#4
mrmephistopheles Magnanimous Justice Distribution Service Join Date: Mar 2002 Location: BFE Age: 23 Posts: 14,372 Trader Rating: (9) Rides Gallery: mrmephistopheles Feedback Score: 9 reviews	stretch will differ between manufacturers and tire width. that'd be a damn hard thing to calculate for

09-29-2004, 10:25 PM	#6
KA24DESOneThree Post Whore! Join Date: Feb 2004 Location: SD County SoCal Age: 39 Posts: 2,564 Trader Rating: (2) Rides Gallery: KA24DESOneThree Feedback Score: 2 reviews	I wish they wouldn't. That way, people would have to find out the hard way and maybe in all that work, they'd realize that hipari is UGLY.

10-01-2004, 02:35 PM	#8
Chernobyl Zilvia FREAK! Join Date: May 2003 Location: Denver, CO Age: 42 Posts: 1,563 Trader Rating: (6) Feedback Score: 6 reviews	Total height is not affected by sidewall stretch. Have a nice day.

10-01-2004, 03:30 PM	#10
Chernobyl Zilvia FREAK! Join Date: May 2003 Location: Denver, CO Age: 42 Posts: 1,563 Trader Rating: (6) Feedback Score: 6 reviews	Ok, take a dismounted tire and try to squeeze it to a different diameter while keeping it round. I bet you can't do that. Stretching changes the angle of the sidewall, not the diameter of the tire.

10-01-2004, 04:25 PM	#11
Andrew Bohan Post Whore! Join Date: Apr 2003 Location: Ohio Posts: 8,331 Trader Rating: (2) Feedback Score: 2 reviews	normal tire \|___\| stretched tire \___/ you have to make the sidwalls taller to keep the wheel-to-tread distance the same. otherwise the wheel-to-tread has to be less. basic geometry

10-01-2004, 07:50 PM	#13
Chernobyl Zilvia FREAK! Join Date: May 2003 Location: Denver, CO Age: 42 Posts: 1,563 Trader Rating: (6) Feedback Score: 6 reviews	ugh. its hopeless. Go to a tire shop and ask them to show you how a tire beads on a wheel. I'm not gonig to try to explain it further. Stretching tires will NOT change overall tire diameter. Maybe a nanometer or two...

10-04-2004, 10:15 AM	#15
Zemus Nissanaholic! Join Date: Oct 2001 Location: Minneapols Age: 40 Posts: 2,268 Trader Rating: (0) Rides Gallery: Zemus Feedback Score: 0 reviews	Hah streaching does change it just a bit. Exp I had a 215/50/15 on a 7inch wheels, and I had 215/50/15 (same tire) on a 8.5inch wheel and it was quite a bit smaller, Like I could tell by looking at it. Optical illusion... possably, :shrugs: It seems a bit shorter __________________ \|Ziptied.com\|Hybrid Z\|D-Town Forum\|Clubfr.net\|

10-04-2004, 11:11 AM	#16
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	What about your speedometer? did it change at all? __________________ Hi