Advice required on tyre sizing please

[Pondrew]

I am looking at buying a set of 666m copies (CM wheels), but am undecided whether to go for 19" OR 20". To help make the decision I want to get prices for tyres for each from my local tyre place, to see the difference in cost.
Is the 'rule of thumb' to go down a profile size for every inch larger diameter? I.E if a 19" should have 35 profile, would a 20" need a 30?
Also is there a 'rule of thumb regarding width of tyre? I.E for a 10.5" (267mm) wheel, would the correct width be 275mm, or 285mm, or what?

Any advice appreciated

 

[brillomaster]

generally yes, up the diameter by an inch, drop the profile by 5. as for widths, plenty of charts on line for these things...

 

[brillomaster]

this pdf has a good chart for tyre sizes.

https://www.lvvta.org.nz/documents/infosheets/LVVTA_Info_01-2009_V3_Tyre_Size_to_Wheel_Size_Compatibility_Guide.pdf

and something like willtheyfit.com to help calculate widths, offsets, rolling radiuses etc.

 

[Pondrew]

Thanks Brillo, that's brill

 

[B21]

What car are you fitting them to ?

 

[Pondrew]

What car are you fitting them to ?

Probably a white one..

 

[The.Analyst]

What car are you fitting them to ?

Probably a white one..

Very helpful…

 

[Pondrew]

What car are you fitting them to ?

Probably a white one..

Very helpful…

Thank you. I thought so :lol:

 

[The.Analyst]

Probably a white one..

Very helpful…

Thank you. I thought so :lol:

Why do you need to s**t in this forum and act like a twat?

 

[Pondrew]

Very helpful…

Thank you. I thought so :lol:

Why do you need to s**t in this forum and act like a t**t?

It's what I do!
I call it a sense of humour, you should try getting one. Amazon probably sell them.

 

[sars]

Probably a white one..

Very helpful…

Thank you. I thought so :lol:

20” on a 30 profile on the Skoda, classy

 

[Pondrew]

Very helpful…

Thank you. I thought so :lol:

20” on a 30 profile on the Skoda, classy

I have a new business venture in mind. Drug dealer. So need the wheels to go with the whole 'thang'. :lol:

Being serious (for a moment to please Mr Anal...yst) I am actually looking at getting an F33 440i, but like the M4 comp wheels. That was the reason behind the original enquiry.

 

[sars]

Oh nice, replacing the Alpina or is it for the wife?

 

[Pondrew]

Oh nice, replacing the Alpina or is it for the wife?

I was actually considering replacing the wife, but that would be far too expensive (so the lawyer tells me)

The Czech Golf is going next week, to be replaced with a Mazda 3. :roll:

Looking to consolidate cars TBH. Alp going, E89 also and replacing with the above. I really want an M4 comp vert, but the 440i makes more sense. Looking at options (again)

 

[tiglon]

Thank you. I thought so :lol:

Why do you need to s**t in this forum and act like a t**t?

It's what I do!
I call it a sense of humour, you should try getting one. Amazon probably sell them.

Nope. I'm fully paid up on Amazon Prime and still no sense of humour. Also, if you could buy a sense of humour Putin wouldn't need to be such a stupid c**t.

Willtheyfit.com is useful for calculating diameter and making sure you get the right fit. 20" seems a bit much on a Z4 to me, aesthetically, but go for it if you like it

 

[tiglon]

P.s. for 10.5 inch wheel 275 or 285 would both be fine. I have 10 inch at the back (that's what she said) and 265 is on the smaller side for them, switching to 275 tomorrow.

But, when I was looking for new wheels I couldn't find a 666m in 19", I don't think they do them?

 

[Pondrew]

Why do you need to s**t in this forum and act like a t**t?

It's what I do!
I call it a sense of humour, you should try getting one. Amazon probably sell them.

Nope. I'm fully paid up on Amazon Prime and still no sense of humour.
Willtheyfit.com is useful for calculating diameter and making sure you get the right fit. 20" seems a bit much on a Z4 to me, aesthetically, but go for it if you like it

You have a sense of humour Will, don't worry!

It would be comical to put a set of 20" 666Ms on an E89. Almost worth the (considerable) cost.

 

[Smartbear]

Oh nice, replacing the Alpina or is it for the wife?

I was actually considering replacing the wife, but that would be far too expensive (so the lawyer tells me)

The Czech Golf is going next week, to be replaced with a Mazda 3. :roll:

Looking to consolidate cars TBH. Alp going, E89 also and replacing with the above. I really want an M4 comp vert, but the 440i makes more sense. Looking at options (again)

You can’t sell the e89, it’s like the hotel California here…
Rob

 

[Pondrew]

Oh nice, replacing the Alpina or is it for the wife?

I was actually considering replacing the wife, but that would be far too expensive (so the lawyer tells me)

The Czech Golf is going next week, to be replaced with a Mazda 3. :roll:

Looking to consolidate cars TBH. Alp going, E89 also and replacing with the above. I really want an M4 comp vert, but the 440i makes more sense. Looking at options (again)

You can’t sell the e89, it’s like the hotel California here…
Rob

I don't think there is a rule that you have to own a Z4. You ain't getting rid of me that easily :lol:

 

[BTZ461]

Very helpful…

Thank you. I thought so :lol:

Why do you need to s**t in this forum and act like a t**t?

^ What he said. Wake up Pondrew. :x