tire size [Archive] - 240Atlanta.com

jiminycricket

11-18-2007, 03:11 PM

K so I found a nail in my rear left yesterday :(
I was thinking about getting new tires anyway, the tire's I have on there right now are 235/40/18.
They are pretty beefy but I was thinking about possibly stretching.
Any comments on doing this? IF I were to do that, what size should I go with?

Here's a pic of one of the fronts: http://i16.tinypic.com/73m85mq.gif

Broke240

11-18-2007, 05:38 PM

What size rims do you have. I see 18s but how wide.

I am not a fan of the stretched look, but a small stretch isn't bad.

jiminycricket

11-18-2007, 05:42 PM

^ Yea I'm not looking for a major stretch, just want the sidewall of the tire to be angled in slightly rather than puffed out ya know?
The rims are 7.5 wide 18"

Broke240

11-18-2007, 05:48 PM

If you just want a little stretch maybe just go down one size to a 225, but I would say no smaller than a 215.

A 215 may even be a little small for my taste, but it's up to you.

tc240

11-18-2007, 05:50 PM

yeah... 225/40's is about as low as i would go.

I can check on how cheap I can get em while I'm at work tomorrow, if you'd like.

jiminycricket

11-18-2007, 05:51 PM

I was thinking 225 but what percent to I go from the 40 I have now? do I do 225/40/18, I don't know much about the whole sizing thing. But 225 should be fine

yeah... 225/40's is about as low as i would go.

I can check on how cheap I can get em while I'm at work tomorrow, if you'd like.

Where do you work? I was looking at the Falken Azines or anything around there. Whatever you can find that looks good lmk. thanks man

hellfire

11-18-2007, 05:58 PM

Well..

If you only have 7.5in wheels. 225's will still not stretch.

7.5 inches = 190.5 millimeters

We have 225's on Carina's 9's in the front. Thats stretched but still not even that bad..

Tyler

tc240

11-18-2007, 06:03 PM

Well..

If you only have 7.5in wheels. 225's will still not stretch.

7.5 inches = 190.5 millimeters

We have 225's on Carina's 9's in the front. Thats stretched but still not even that bad..

Tyler

yeah... but he's only going 40 in height... for streetability... i wouldn't go much smaller than a 225 on it.

and btw jiminy: I work at a local shop that sells tires and such... I'll check prices tomorrow and write down what seems like a good deal.

jiminycricket

11-18-2007, 10:12 PM

thanks man, I appreciate it.
And what he said is true. anything less than 40 would be no use to me as I am still trying to get as many miles as I can out of whatever I get

GriffinW

11-18-2007, 11:21 PM

So the the concept of putting a smaller than the rims width only works if you have a really low profile tire?

jiminycricket

11-19-2007, 01:32 AM

^^^ I'm not really sure dude. I mean I'm not talking about that crazy Bippu crap you see with 3mm thick tires. I just want the sidewall not to stick out past the rim.
Oh and griffin. I'm sendin ya an Email so check it

Broke240

11-19-2007, 01:50 AM

I am the same way. I say go with the 225.

I have 10in. rims in the back which are 254mm and I run a 265/40/17. The tires are still pulled in just a little, but not stretched.

tc240

11-19-2007, 03:58 AM

the second number is an aspect ratio of the tire... approx how much tread will be on the road.

technically the more you stretch, the smaller (height wise) the tire will be. So... to achieve the same height... you'd go with a higher sidewall.

Jiminy... PM me for my phone number and call me tomorrow morning to remind me to look up the tires.

down_shift

11-20-2007, 12:31 AM

jim go with some 215s it wont look strecthed on a 7.5.

tc240

11-20-2007, 12:43 AM

225/40/17

all prices are plus or minus 5-10 dollars

Kumho AST: 100ish a piece
Cooper Zeon: 85ish
Dunlop Direzza: 120ish

i just picked a few of the lower priced, but name brand tires

jiminycricket

11-20-2007, 01:48 AM

jim go with some 215s it wont look strecthed on a 7.5.

If I go with 215's will I still need a 40 ratio?
like going from a 235/40/18 (now)
to just a 215/40/18 ?

and Thanks so much for quoting those prices for me. I'm gonna get back to you on those if I can see if a friend from Allspeed can get some around those prices. thanks man.

GriffinW

11-20-2007, 03:35 AM

make sure to post comparison pictures of old vs new when you get them.

homeslicej2

11-20-2007, 03:36 PM

235/40/18

235mm wide
40=the percentage of the tire's width. This is the aspect ratio and the sidewall height of the tire. It means the the sidewall is 40% as tall as the tire is wide (235 divided by 40% = 94mm high sidewall). To find out if you need to go with a different aspect ratio use this.

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

It will let you compare all the differences in size, revs per mile, etc. between tire/wheel sizes.

Here is a link for info on deciphering tire numbers/letters

Oh, and if you use the calculator, you'll see that a 215/45/18 is closer to the size you have now than a 40 would be.

http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=46

babowc

11-20-2007, 05:15 PM

i'd go with a 215/40 on your size.
215/45 doesnt look bad either.

1800DialKyle

11-20-2007, 05:22 PM

8 inch wide fronts with 205's
10 inch wide rears with 225's
is what I run. Not really that streched

wantboost

11-21-2007, 03:57 PM

Where do you work? I was looking at the Falken Azines or anything around there. Whatever you can find that looks good lmk. thanks man

i wouldnt recommend those for a DD they wont last long and they suck in the rain, like really suck. dry=unreal

jiminycricket

11-21-2007, 07:45 PM

I'm gonna go with 215/40/18. If you type in those specs in the site i wil most likely get the tires from (edgeracing.com) it gives you about 6 selections all for around the same price. Question is, anyone have any experience on those choices that might help me out with the buy?

jiminycricket

11-28-2007, 01:16 PM

I've decided on a tire. They'll be 225/40/18 Parada Spec 2 Yokes.
Not putting them on till around February but I'll post pics when I change.
Thanks again to the guy who was helping me out with price quotes from his shop.

Cameron.

12-05-2007, 04:48 AM

i have 215s on my 8 inch wide wheels.. with no noticable stretch, 215 is good for you..

mikespeed95

12-05-2007, 07:32 AM

maybe run a 225 but the only reason im suggesting that is because thats a more popular size.

theres no such thing as stretching tires on a 7.5'' wide rim.

jiminycricket

12-09-2007, 10:35 PM

you're absolutely right, And even if I were to stretch them it would need to be like a 205 or less. ? where's the tread life in that? haha.

Wes

12-09-2007, 10:47 PM

I don't really like to stretch tires, mainly just for ride comfort.

I have 225/45's on my 17X7's on my RSX, and I've ran some 215s, and 235s. I hated the 215s, period, the 235's were nice, but, you could feel the tires sway when you'd go over tons of uneven roads, and I hated that, but, they felt great in traffic, really planted, and right now I have 225's, and its a good middle for me. Not to mention, they cover my rim evenly, so, no bad curbing, haha.

I suppose different people like different things.

For your car though, I wouldn't go below a 225. Thats just me though.

jiminycricket

12-10-2007, 01:46 AM

Thats what I'm going with is 225's. Because right now the 235 on a 7.5" is great with traffic like you said with your 235's, but I could go just a tad less. And I think its uneccessary at this point to stretch.

spooled

12-11-2007, 01:26 AM

Although to some it looks cool, "Hypen", "hipari" or stretching the tire actually makes/results in the sidewall being stronger for extreme cornering applications. For drift applications this is ideal. Hypen of the tire was done alot in the old days to improve the cornering handling characteristics of race cars. Tire stretch is used to stop sidewall flex specially in high speed drift.

That rim is too small in width to take advantage of the stretch as you would end up with a much narrower tire and loose alot of straight line and cornering traction.

gl