Paging Dad'sTT: Do you have any pics of your car
02-25-2006, 07:25 PM
#1
AudiWorld Super User
Thread Starter
Paging Dad'sTT: Do you have any pics of your car
with the 245/45/17s on stock 7.5" wide rims? I found this post back in 2003.
If anyone else has pictures or stories of any wider tires than 225/45 on the fat fives, I'd be interested in those too.
Thanks!<ul><li><a href="https://forums.audiworld.com/tt/msgs/962211.phtml">TFA</a></li></ul>
If anyone else has pictures or stories of any wider tires than 225/45 on the fat fives, I'd be interested in those too.
Thanks!<ul><li><a href="https://forums.audiworld.com/tt/msgs/962211.phtml">TFA</a></li></ul>
02-26-2006, 09:46 AM
#3
Using the rim width calculator...>
On this site, even a 235 suggests an 8" rim as the minimum width. Wider isn't better. It won't get you more grip, just change the shape of the tire patch on the ground which is determined by weight. If you want fatter tires for looks, get wider rims...<ul><li><a href="http://www.chris-longhurst.com/carbibles/tyre_bible.html">http://www.chris-longhurst.com/carbibles/tyre_bible.html</a</li></ul>
02-26-2006, 09:52 AM
#4
AudiWorld Super User
Thread Starter
okay, thanks, but if you read my post, I'm not looking for wider rims right now
I actually need constructive input, not just chastisement--which is how you come across whenever you post about this type of thing.
02-26-2006, 09:58 AM
#6
AudiWorld Super User
Thread Starter
And I appreciate that, but at the same time, you are not answering the questions that I asked.
So how can I ignore your expert advice when it doesn't apply to my questions?
02-26-2006, 10:02 AM
#7
I thought the answer was obvious.......>
225's. Variuous manfacturers actual tread width will vary slightly as you've pointed out. This really makes no difference as chosing the proper cross-section for the rim width is most important. Go to the manufacturer pages to get specs and measurements.
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02-26-2006, 10:10 AM
#9
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This is what he's saying....
The fat fives you have right now require a certain size tire, plain and simple. If you go wider, you change the handling dynamics. If you go narrower, you change the handling dynamics. The experience Dad'sTT had with the wider size tires is understandable because I'm sure all it involved was highway driving and barely a hint of spirited driving (cornering), although I could be wrong.
BUT, neither I nor anyone else has to give you an excuse or comparison to prevent you from endangering your self, your passenger and everyone else traveling on the same roads as you. So if you do decide to go with a wider size tire, let us all know here at the forum when and where you are driving so that we can avoid being on the same roads that you are driving on just in case you happen to loose control of your car due to the wider size tire. Oh, and it would be nice of you to disclose this to your potential passenger before they get in so that they can decide to ride with your or not, because I surely wouldn't.
P.S. The look of a wider tire on a rim looks hideous. Really. No better than a narrower size tire on a rim. So if your looking for pictures of that tire on Dad'sTT to see if it looks good or not, don't worry, because it doesn't.
BUT, neither I nor anyone else has to give you an excuse or comparison to prevent you from endangering your self, your passenger and everyone else traveling on the same roads as you. So if you do decide to go with a wider size tire, let us all know here at the forum when and where you are driving so that we can avoid being on the same roads that you are driving on just in case you happen to loose control of your car due to the wider size tire. Oh, and it would be nice of you to disclose this to your potential passenger before they get in so that they can decide to ride with your or not, because I surely wouldn't.
P.S. The look of a wider tire on a rim looks hideous. Really. No better than a narrower size tire on a rim. So if your looking for pictures of that tire on Dad'sTT to see if it looks good or not, don't worry, because it doesn't.
02-26-2006, 10:15 AM
#10
I should have said "aspect ratio" Sorry if that confused you.....
<center><img src="http://www.chris-longhurst.com/carbibles/images/aspectratio.gif"></center><p>Sometimes the other term is used. I've provided this link to you several times now..
Aspect Ratio and Rim / Pan Width.
Aspect ratio is, as you know if you read the bit above, the ratio of the tyre's section height to its section width. The aspect ratio is sometimes referred to as the tyre 'series'. So a 50-series tyre means one with an aspect ratio of 50%. The maths is pretty simple and the resulting figure is stamped on all tyres as part of the sizing information:
Aspect ratio = Section height
Section width
The actual dimensions of a tyre are dependent on the rim on which it is mounted. The dimension that changes the most is the tyre's section width; a change of about 0.2" for every 0.5" change in rim width.
The ratio between the section width and the rim width is pretty important. If the rim width is too narrow, you pinch the tyre in and cause it to balloon more in cross-section. If the rim width is too wide, you run the risk of the tyre ripping away at high speed.
For 50-series tyres and above, the rim width is 70% of the tyre's section width, rounded off to the nearest 0.5.
For example, a P255/50R16 tyre, has a design section width of 10.04" (255mm = 10.04inces). 70% of 10.04" is 7.028", which rounded to the nearest half inch, is 7". Ideally then, a 255/50R16 tyres should be mounted on a 7x16 rim.
For 45-series tyres and below, the rim width is 85% of the tyre's section width, rounded off to the nearest 0.5.
For example, a P255/45R17 tyre, still has a design section width of 10.04" (255mm = 10.04inces). But 85% of 10.04" is 8.534", which rounded to the nearest half inch, is 8.5". Ideally then, a 255/45R17 tyre should be mounted on an 8?x17 rim.<ul><li><a href="http://www.chris-longhurst.com/carbibles/tyre_bible.html">http://www.chris-longhurst.com/carbibles/tyre_bible.html</a</li></ul>
Aspect Ratio and Rim / Pan Width.
Aspect ratio is, as you know if you read the bit above, the ratio of the tyre's section height to its section width. The aspect ratio is sometimes referred to as the tyre 'series'. So a 50-series tyre means one with an aspect ratio of 50%. The maths is pretty simple and the resulting figure is stamped on all tyres as part of the sizing information:
Aspect ratio = Section height
Section width
The actual dimensions of a tyre are dependent on the rim on which it is mounted. The dimension that changes the most is the tyre's section width; a change of about 0.2" for every 0.5" change in rim width.
The ratio between the section width and the rim width is pretty important. If the rim width is too narrow, you pinch the tyre in and cause it to balloon more in cross-section. If the rim width is too wide, you run the risk of the tyre ripping away at high speed.
For 50-series tyres and above, the rim width is 70% of the tyre's section width, rounded off to the nearest 0.5.
For example, a P255/50R16 tyre, has a design section width of 10.04" (255mm = 10.04inces). 70% of 10.04" is 7.028", which rounded to the nearest half inch, is 7". Ideally then, a 255/50R16 tyres should be mounted on a 7x16 rim.
For 45-series tyres and below, the rim width is 85% of the tyre's section width, rounded off to the nearest 0.5.
For example, a P255/45R17 tyre, still has a design section width of 10.04" (255mm = 10.04inces). But 85% of 10.04" is 8.534", which rounded to the nearest half inch, is 8.5". Ideally then, a 255/45R17 tyre should be mounted on an 8?x17 rim.<ul><li><a href="http://www.chris-longhurst.com/carbibles/tyre_bible.html">http://www.chris-longhurst.com/carbibles/tyre_bible.html</a</li></ul>
