nikon-man

iTrader: (3)

could somebody measure an 18" wheel for me and tell me how wide they are....may seem a stupid question but my 17" ones are over 17" wide

all I need is the rims not with tyres

thanks guys

SmurfyBhoy

17" wide ???

Would that not need like a 400 odd section tyre ??

SmurfyBhoy

Think its 7.5 or 8 J

Could be wrong

nikon-man

iTrader: (3)

should have said wheel diameter not width

The Trooper 1815

iTrader: (31)

Area:226.98006922186258
Diameter: 17
Circumference:53.40707511102649

Area:254.46900494077323
Diameter:18
Circumference:56.548667764616276

SmurfyBhoy

The Trooper 1815

iTrader: (31)

So I was right then.

SmurfyBhoy

Correct yes but kinda useless,

When would you need to know the area or circumference of an alloy ?

Think he was after the width and offset, like 7.5J, ET46 etc.

SmurfyBhoy

May help a little.

nikon-man

iTrader: (3)

all great stuff but all I was looking for was the width of a tyre rim which is 18"

are they spot on 18" or wider ????

SmurfyBhoy

Your not being very clear ?

If you mean width like the width in picture attached it can change along with offset.

Wheel

Diameter - 18"
Width - 5/6/7/8/9/10 J
Offset - Et 46,53 etc...

joz8968

iTrader: (13)

Generally, 'most' 18" alloys are produced in 7.5J and 8J widths (7" and 8" respectively). But, of course, any given manufacturer can, and sometimes do, make any wheel in multiple widths, for different applications (within reason, of course).

So it's a bit of a 'how long is a piece of string' type question.

nikon-man

iTrader: (3)

lets try once again guys....I want to know the width of an 18" wheel....

so can somebody just measure the width / diameter and tell me what they are....

I don't want the width as in 7-5 etc

take a tape measure and let me know the width of the rim without tyre size or make are they 18" or wider ???????????/

SmurfyBhoy

Lets show you again

18" from what i read is the inner diameter.

The Trooper 1815

iTrader: (31)

Eh?

Or look inside the rim at a spoke, it normally says the with.

nikon-man

iTrader: (3)

I have 17" on my car and if I measure the width of them they come out just over 18" wide which is way I would like to know how wide an 18" wheel is

width as in 7.5" I am not worried about just the actual diameter of a rim.....

SmurfyBhoy

If your measuring the outside facing you then obviously it will be larger as its from where bead of tyre sits

SmurfyBhoy

nikon-man

iTrader: (3)

I am not worried if it is larger smaller has more bhp all I want to know is the size !!!!!!!!!!!!!!

SmurfyBhoy

Obviously all gona be slightly different depending on style,

Bit of a useless dimension really imo

The Trooper 1815

iTrader: (31)

Pictures are the only way to the bottom of this one.

nikon-man

iTrader: (3)

can somebody measure me an 18" GT1 wheel and let me know the diameter of them.....

SmurfyBhoy

My 18" Prodrives are 19" approx,

Still useless tho can you explain why ??

SmurfyBhoy

But if you measured it like you should its would obviously be 18"

The Trooper 1815

iTrader: (31)

If you are measuring to the edge of the tyre across the diameter it will depend on the tyre profile.

18" = 19.2" with 40mm profile tyres.

The Trooper 1815

iTrader: (31)

I think the clue is in your tyre size.

SmurfyBhoy

I measured mine hoping id find out why he needs the dimension lolol

The Trooper 1815

iTrader: (31)

The extra diameter is the lip that stops the tyre coming off which is not included in the measurements. Inside the lip, inner face to inner face, is 18 inches. The red marks on your picture.

SmurfyBhoy

I would imagine that one can change dependent on style etc ?

Still be within a few mm of each other tho, I'd guess

Like you says all the info is on the tyres,

There's a reason that there's a standard way of measuring a wheel lol

nikon-man

iTrader: (3)

i have just purchased a set of GT1 wheels and was looking at the 17! ones already on my car and wondered how much room there was to play with...

that's why I was asking !!