VW Vortex - Volkswagen Forum banner
1 - 13 of 13 Posts

·
Registered
Joined
·
1,028 Posts
Discussion Starter · #1 ·
Hi all. I am about to go buy new tires...I have decided on Kumho Ecsta 712s, as they are a great price. I have stock 16" rims, and am wondering what tire aspect ratio I should go with. I want 225s for sure, so my question is, will 225/55/ZR16s fit (stock tires are 205/55/R16s), or should I go with 225/50/ZR16s? I have a stock suspension set up, so there is lots of room. Can anybody help me with some advice? Thanks!
 

·
Registered
Joined
·
35,225 Posts
Re: Tire size advice (essemm)

I have a similar issue with my stock Avus 15's with my fk coilovers... Just for wintertime... I want a good tire to last with some snow and if its nice out... can anyone help me with a brand type.... I was thinking of going back to the conti's but thought about changeing that up...My uncle owns a tire and wheel shop, so I get great deals on things.Please help http://****************.com/smile/emthup.gif
 

·
Registered
Joined
·
5,019 Posts
Re: Tire size advice (converted_vw)

Quote, originally posted by converted_vw »
225/50 r16 are fine.

http://****************.com/smile/emthup.gif There are less than .1% difference in 225/50/16 and 205/55/16.
 

·
Registered
Joined
·
1,028 Posts
Discussion Starter · #5 ·
Re: Tire size advice (PA_Jetta1.8T)

Quote, originally posted by PA_Jetta1.8T »

http://****************.com/smile/emthup.gif There are less than .1% difference in 225/50/16 and 205/55/16.

So you are saying that the 55s are fine? I would rather keep the 55s then go to 50s if possible.


Modified by essemm at 9:47 AM 7-2-2003
 

·
Registered
Joined
·
5,019 Posts
Re: Tire size advice (essemm)

Quote, originally posted by essemm »

So you are saying that the 55s are fine?

No, they will throw off your Speedometer and Odometer.
What I was saying that the size difference between 205/55/16 and 225/50/16 is less than .1%. Sorry for the confusion. Go with the 225/50/16
 

·
Registered
Joined
·
1,028 Posts
Discussion Starter · #7 ·
Re: Tire size advice (PA_Jetta1.8T)

Quote, originally posted by PA_Jetta1.8T »

No, they will throw off your Speedometer and Odometer.
What I was saying that the size difference between 205/55/16 and 225/50/16 is less than .1%. Sorry for the confusion. Go with the 225/50/16

Thanks for the posts. I appreciate the help. I am confused though. How will 55s throw off the speedo and odo seeing as the stock tires that come with the car are 55/16s?
Again, I am not trying to argue...I genuinly appreciate the help...I just wanna understand. Tire sizes always confuse me.
 

·
Registered
Joined
·
5,019 Posts
Re: Tire size advice (essemm)

Quote, originally posted by essemm »

Thanks for the posts. I appreciate the help. I am confused though. How will 55s throw off the speedo and odo seeing as the stock tires that come with the car are 55/16s?
Again, I am not trying to argue...I genuinly appreciate the help...I just wanna understand. Tire sizes always confuse me.

Without writing a novel about tire sizes, you basically want to keep the overall diameter of the tire the same when changing sizes. Because you are increasing the width of the tire you need to decrease the sidewall height. 225 is the width and 50 is the sidewall.
 

·
Registered
Joined
·
1,028 Posts
Discussion Starter · #9 ·
Re: Tire size advice (essemm)

Ok. Thanks! Does anyone have the formula for working out tire sizes? Thanks!


Modified by essemm at 10:22 AM 7-2-2003
 

·
Registered
Joined
·
5,019 Posts
Re: Tire size advice (PA_Jetta1.8T)

Basically you use this fomula
width x sidewall x 2 = X + (wheel size) =diameter
so,
225 x .50 x 2 = 225.0 + 406.4 (16" x 25.4mm) = 631.4 or 24.86"
205 x .55 x 2 = 225.5 + 406.4 (16" x 25.4mm) = 631.9 or 24.87"
225 x .55 x 2 = 247.5 + 406.4 (16" x 25.4mm) = 653.9 or 25.74"
So you see that the 225 /55/16 is almost an inch bigger in diameter, which will result in making your odometer and speedometer off by 3.5% meaning that when your speedometer says 60 MPH you will actually be traveling 62.1 MPH.
 

·
Registered
Joined
·
3,861 Posts
Re: Tire size advice (essemm)

Right, the 2nd number (55 or 50 or whatever) is a ratio, not a measurement.
-Imp
 
1 - 13 of 13 Posts
Top