Tire Sizing Gurus, Help Me Out.

[Bud Brown]

Yes i searched, but no dice.

I just ordered some Konig Feathers (16.8 lbs for 17s ftw), and the sizing of the wheels are as follows:

17x7 - Offset 40

Now I am lost when it comes to correct tire sizing, so what would be the ideal size meat for those wheels? They'll be going on my 5lug swapped S13 Chuki Hatch, which is lowered on Tokico Springs and Shocks, but its not by any means slammed.

Thanks in advance guys. :rawk:

[Taniguchi_Is_#1]

205's are square on 7".

[LB.Motoring]

Tire sizing goes as follows...

Here is an explanation of tire fitments and what all the numbers mean, and how they correlate with the old sizes.

First, lets look at metric sizes of today. Ex. 225/70R15. The first number(225) represents the cross section width of the tire at its widest point(sidewall) in millimeters. The second # (70) represents the Aspect Ratio. This a big term meaning that this tire's sidewall height is 70% of the cross section width, or 70% of 225mm. The R means simply Radial tire construction. And finally the 15 represents the rim size.

Now, if you want to go to a wider tire, but you don't want to change the overall diameter/height of the tire the rule of thumb is this:

Take our first example 225/70R15 To go wider you would do this. 235/65R15 wider yet would be: 245/60R15 and one more would be 255/55R15 You see the connection here. When doing what is called a "plus fitment", you increase the width number by 10 and decrease the Aspect Ratio number by 5. That is if you keep the same rim diameter. There are different rules for changing rim size that I won't get into here.

So, if you had a 225/70R15, and you went to a 255/60R15, then you would not have the same overall diameter/height. You would be off 5%.

[Bud Brown]

so a 215/40/17 sized tire will fit fine?

[Taniguchi_Is_#1]

so a 215/40/17 sized tire will fit fine?


yes.



adfasfewafsa

[Bud Brown]

thanks guys, + rep for all.

[timlush]

215/45/17 would be closer to stock sizing and not throw the speedo off as much.

[Flybert]

Why did you order FWD wheels for your car? Get serious. Cancel your order and buy something different unless you want to look like a fool.

[OptionZero]

dude, because 16.8 lbs for a 17inch FTW!!!

[MomentumGT]

I thought FTW meant F**k The World so I thought he was angry with the rims. Oops.

-Jon

[Jpooks_S13]

17x7 +40 in a car you claim is making 350 rwhp...what are your plans with the car?not to be rude but cancle the order and get at least 17x9's and what do you want with your tire sizing stretched square or balooned?

[viscid240]

Shock & spring combo, we did not expect you to be slammed. Sounds like you are playing the safe card with your s13. Also 215/40/17 would be fine since you plan on running pizza cutters,

Is there a reason to why you chose those wheels? Those are not exactly s chassis sized tires, or good offset... ok, ok. they are crap. At least go with your typical FN's.

I say go to some Honda forums and see what size tires they run since that's what wheels you are running.


Good Luck with your decision!