i want to put 17inch alloys on a standard 1.4 polo 9n

i have not modified it in anyway yet

I'm just wondering if any of the more knowledgable people on here

could advise me if there would be any problems

or if i would have to changer the coilovers etc

thankyou in advance

If its standard then you won't have coilovers on the car.

As for the wheels I imagine you can (and have seen other 9n's on here on 17's) aslong as you don't have massive balloon tyres aswell but I'm sure someone will correct me of I'm wrong.

If its standard then you won't have coilovers on the car.

As for the wheels I imagine you can (and have seen other 9n's on here on 17's) aslong as you don't have massive balloon tyres aswell but I'm sure someone will correct me of I'm wrong.

ah so are coilovers after market? sorry I'm abit of a noob, just getting into modding cars,

so i will need low profile tyre's?

Adjustable coilovers are aftermarket yes.

Ideally you want to maintain the total rolling radius/diameter of the original wheel. So if you increase the wheel diameter then you will want lower profile tyres. To calculate the total diameter multiply the side wall number (as a percentage) by the tyre width. Multiply this number by 2. The to convert to mm to cm, divide by 10 and then convert to inches (divide by 2.45) and add to the wheel diameter.

So if you had an original size of 14" with 185/60 tyres the total diameter would be

185 x 0.60 = 111

111 x 2 = 222

Convert to cm 222/10 = 22cm (this is now the total height of both side walls of the tyres)

Convert to inches 22 x 2.45 = 9.1" (total sidewall height in inches)

Add the original wheel diameter 14 + 9.1 = 23.1"

So to keep the original overall wheel/tyre size your total sidewall measurement needs to be 23.1- 17 (new wheel size) = 6.1

6.1/2 = 3" (each sidewall either side of the middle of the wheel Center)

3 x 2.45 = 7.45cm side wall

7.45 x 10 = 74.5mm sidewall height

So depending on the width of your tyre (the 185 number above), the profile (the 60 above) will change. The width of the tyre will be determined by the width of your wheel.

If you had a 17" wheel with 7" width, you'd likely run a 195 width tyre. So to calculate your required profile you need to

Profile = Sidewall Height/tyre width (taken from above)

Profile = 74.5 / 195

Profile = 0.38 (rounded to 0.40)

Multiply by 10 = a profile of 40

So, for your 17 x 7 wheel, maintaining the original rolling radius you'd want a tyre size of 195/40/17

Hope that helps

Edited 3 January, 201313 yr by prankstar2003

i have some 17inch alloys if your interested?

Adjustable coilovers are aftermarket yes.

Ideally you want to maintain the total rolling radius/diameter of the original wheel. So if you increase the wheel diameter then you will want lower profile tyres. To calculate the total diameter multiply the side wall number (as a percentage) by the tyre width. Multiply this number by 2. The to convert to mm to cm, divide by 10 and then convert to inches (divide by 2.45) and add to the wheel diameter.

So if you had an original size of 14" with 185/60 tyres the total diameter would be

185 x 0.60 = 111

111 x 2 = 222

Convert to cm 222/10 = 22cm (this is now the total height of both side walls of the tyres)

Convert to inches 22 x 2.45 = 9.1" (total sidewall height in inches)

Add the original wheel diameter 14 + 9.1 = 23.1"

So to keep the original overall wheel/tyre size your total sidewall measurement needs to be 23.1- 17 (new wheel size) = 6.1

6.1/2 = 3" (each sidewall either side of the middle of the wheel Center)

3 x 2.45 = 7.45cm side wall

7.45 x 10 = 74.5mm sidewall height

So depending on the width of your tyre (the 185 number above), the profile (the 60 above) will change. The width of the tyre will be determined by the width of your wheel.

If you had a 17" wheel with 7" width, you'd likely run a 195 width tyre. So to calculate your required profile you need to

Profile = Sidewall Height/tyre width (taken from above)

Profile = 74.5 / 195

Profile = 0.38 (rounded to 0.40)

Multiply by 10 = a profile of 40

So, for your 17 x 7 wheel, maintaining the original rolling radius you'd want a tyre size of 195/40/17

Hope that helps

thankyou so much, :)

i have some 17inch alloys if your interested?

got any pics bud? and with tyres or without?

and price? :-D

i have some 17inch alloys if your interested?

got any pics bud? and with tyres or without?

and price? :-D

www.facebook.com/oldboyswheels there on here mate

With 17" wheels and no suspension change you will most likely have an enormous gap between the wheel and wing ! So go with their advice ^ and get coilovers.

I have 16" wheels with 205 tyres and barely get away with the standard suspension set up...Sort suspension to level you want and then do wheels in my opinion.

Either that or go for something smaller and keep the standard "comfy" springs.

i also have 9n3 gti springs which are 15mm lower than standard bought them ages ago but never got round to fitting.

i also have 9n3 gti springs which are 15mm lower than standard bought them ages ago but never got round to fitting.

Have you still got these springs?

Definitely get coilovers on if youre fitting 17's as otherwise it sits way too high tyre size differs depending on the width of the wheels, if you want it to sit nicely you'll need quite low profile tyres so you can go lower without catching arches or anything. I've got 17" x 7j on the front with a 195 40 17 and 17"x 8.5j rears with a 205 40 17 fitted. Most people say noting bigger than 17" on a 9n though :)