Wheel and tire size

[justin240sx]

What is the tire and wheel size on kyle martins s13 and what is the drop?

[BlankFlip]

sorry, but who's kyle martins?

[justin240sx]

kyle martin he owns wests old 240

[BlankFlip]

oh ok, u got a pic of the car?

[justin240sx]

its on the website

[LanceS13]

It says on the site 215/40/17 on 17" rims.  With those tires, the rim width will be 7 or 7.5 inches.

[BlankFlip]

yeah, those 5zigen copse 5zr's r usually 17 X 7.5 for 4 lug. those would be perfect for what i'd want right now if they were all black. i guess u could've already known this info though since u said it was on the site, if u meant in a thread though, here's the link to tell all the info on the car.

<a href="http://www.zilvia.net/pages/rides/my240.asp" target='_blank'>http://www.zilvia.net/pages/rides/my240.asp</a>

[rabbit23]

i want to run 245's on the rear. any idea what rim width i'll need? i have 7.5s now but i think i'll have to increase the width. will 245's fit without rubbing? oh yeah, i'll want 18/40/245. anyone forsee any problems with this setup?

[LanceS13]

for 245's you need at least a 8.5&quot; rim...9&quot; couldn't hurt. &nbsp;245/40/18's are too big...you need to go to 35 or even 30 series tires. &nbsp;And as long as you get the correct offset and tire size, those should fit without a problem.

[rabbit23]

why are they to big? do they rub or what? i have 225/40/18 now and they are a pretty rough ride. i think 30 or 35 would be even worse?

[LanceS13]

To ensure you don't rub and so your speedometer won't be way off, you need to maintain as close to stock total tire diameter as possible.
The stock 195/60/15 and 205/55/16 have 24.2 and 24.9 inch diameters respectively. So you want to try to keep it in that range. 245/40/18 have a diameter of 25.7&quot;...that's an inch taller over stock. Your 225/40/18's are 25.1&quot; tall...close enough. 245/35/18's are 24.8&quot; tall...perfect. 245/30/18's are a little short at 23.8&quot; tall, but would give you slightly better gearing and more clearance. I have 225/45/16's that are 24&quot; exactly. If you go out of the 24.2-24.9&quot; range, go shorter...not taller.

(Edited by LanceS13 at 11:24 am on Nov. 19, 2001)

[rabbit23]

how can a tire with same measurements except for width change the diameter? is there something i am missing?

[LanceS13]

the second number (i.e....45, 35, 55, etc.) is called the aspect ratio. &nbsp;It's not a fixxed number but a ratio or percentage. &nbsp;Take my 225/45/16's for instance. &nbsp;They are 225 mm wide...roughly 8.85 inches wide. &nbsp;The sidewall is 45% of the width...101.25 mm which is roughly 4&quot;. &nbsp;Add 4&quot; on each end of the 16&quot; rims and you have a 24&quot; diameter.

[rabbit23]

thank you, just had that explained to me by a guy here at work. good info. i thought the 40 was a fixed number in mm, not a ratio.

[West]

They are 17x7.5 with 215/40/17 tires.

5Zigen R-Rate Springs (Not Availible Anymore) and its a 1.3&quot; front drop and 1.1&quot; rear drop.