Go Back   Dodge Challenger Forum > Challenger Forum Members' Area > The Champagne Room

The Champagne Room The off-topic section. Just remember what Chris Rock said...

How Far Can You Push A "Donut"?


This is a discussion on How Far Can You Push A "Donut"? within the The Champagne Room forums, part of the Challenger Forum Members' Area category!
The February 2017 issue of Car & Driver had an interesting test of a mini-spare ("donut") on a Ford Mustang ...








Reply
 
LinkBack Thread Tools Display Modes
Old 01-09-2017, 06:53 PM   #1 (permalink)
Full Access Member
 
SRT-Tom's Avatar
 
Join Date: Oct 2011
Location: southern New Jersey
Posts: 1,820
Default How Far Can You Push A "Donut"?

The February 2017 issue of Car & Driver had an interesting test of a mini-spare ("donut") on a Ford Mustang GT.

The test was trying to determine how hard you can push a "DO NOT EXCEED 50 MPH" tire donut before you get into trouble.

Surprisingly, the donut held up quite well in braking, skidpad and, to a lesser extent, acceleration tests. Ford's supervisor of Vehicle Dynamics Team, Jamie Cullen, stated the the "goal with a mini-spare is to come as close to the standard tire's performance and response as possible. Mini-spares use an aggressive compound and minimum tread depth to achieve those results." (Note- Some suppliers are known to use the same compound on their mini-spares that they use on superbike tires).

Here are the tests summaries:

Braking

Full ABS braking from 70 mph with the spare on the left front was barely more dramatic than with four Pirelli P Zeros. There was a mild pull to the left but it only took one more foot for the car to stop (i.e., 173 ft.).

Skidpad

When fitted on the outside-front position, the spare reduced feel, response and grip, from 0.88g, with the P Zeros, to 0.84g.with the mini.

Acceleration

Zero to 60 mph was most adversely affected- from 4.8 sec., with the P Zeros, to 5.2 sec. with the mini on the left rear. It was interesting that the limited-slip differential attempted to rotate the tires at the same speed, despite a 2 inch diameter difference. Predictably, the result was less grip and more wheelspin.
SRT-Tom is offline   Reply With Quote
Old 01-14-2017, 02:46 PM   #2 (permalink)
Full Access Member
 
Join Date: Aug 2016
Posts: 61

Default

I try not to "push the donut"!
I try to savor the sugar on my tongue as long as I can.
Then, wash down with some good coffee!

soonercruiser is offline   Reply With Quote
Old 01-16-2017, 07:34 AM   #3 (permalink)
Full Access Member
 
SRT-Tom's Avatar
 
Join Date: Oct 2011
Location: southern New Jersey
Posts: 1,820
Default

Quote:
Originally Posted by soonercruiser View Post
I try not to "push the donut"!
I try to savor the sugar on my tongue as long as I can.
Then, wash down with some good coffee!
How long can you savor the taste of a donut before it goes '"flat?"
SRT-Tom is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 10:37 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO
vB.Sponsors