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Advice required on tyre sizing please
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- Lifer
- Posts: 8771
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Advice required on tyre sizing please
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
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
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
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- Senior Member
- Posts: 1447
- Joined: Thu Aug 24, 2017 12:57 pm
- Location: Leamington Spa
Advice required on tyre sizing please
generally yes, up the diameter by an inch, drop the profile by 5. as for widths, plenty of charts on line for these things...
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- Senior Member
- Posts: 1447
- Joined: Thu Aug 24, 2017 12:57 pm
- Location: Leamington Spa
Advice required on tyre sizing please
this pdf has a good chart for tyre sizes.
https://www.lvvta.org.nz/documents/info ... _Guide.pdf
and something like willtheyfit.com to help calculate widths, offsets, rolling radiuses etc.
https://www.lvvta.org.nz/documents/info ... _Guide.pdf
and something like willtheyfit.com to help calculate widths, offsets, rolling radiuses etc.
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- Lifer
- Posts: 8771
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Advice required on tyre sizing please
Thanks Brillo, that's brill
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
- B21
- Lifer
- Posts: 5652
- Joined: Tue Oct 05, 2021 7:15 pm
- Location: In my Banana Yellow Space Shuttle...somewhere over Southern Caledonia
Advice required on tyre sizing please
What car are you fitting them to ?
We choose to go to on with this endeavour at this time and do the other things, not because they are easy, but because they are hard…
A very modified Atacama Yellow 35is Previously a slightly less modified Atacama Yellow 20i MSport
A very modified Atacama Yellow 35is Previously a slightly less modified Atacama Yellow 20i MSport
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- Lifer
- Posts: 8771
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Advice required on tyre sizing please
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
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- Member
- Posts: 128
- Joined: Thu Sep 02, 2021 11:19 am
- Location: M3 -ish
Advice required on tyre sizing please
Very helpful…
Spending time with a 35i, previous convictions: Fiat 20V Turbo Coupe, TVR Chimera, Jaguar XKR, Porsche 997 C4S
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- Lifer
- Posts: 8771
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Advice required on tyre sizing please
Thank you. I thought so
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
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- Member
- Posts: 128
- Joined: Thu Sep 02, 2021 11:19 am
- Location: M3 -ish
Advice required on tyre sizing please
Why do you need to s**t in this forum and act like a t**t?
Spending time with a 35i, previous convictions: Fiat 20V Turbo Coupe, TVR Chimera, Jaguar XKR, Porsche 997 C4S
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- Lifer
- Posts: 8771
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Advice required on tyre sizing please
It's what I do!The.Analyst wrote: ↑Wed Mar 02, 2022 7:32 pmWhy do you need to s**t in this forum and act like a t**t?
I call it a sense of humour, you should try getting one. Amazon probably sell them.
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
- sars
- Lifer
- Posts: 7052
- Joined: Sun Feb 21, 2010 11:37 am
- Location: East Yorkshire
Advice required on tyre sizing please
20” on a 30 profile on the Skoda, classy
Gorgeous SFR Z4 M40i
Gone 2017 Iridium SL400, 2015 435d xDrive Convertible, 2012 E350 CDi Convertible, 2010 DSB Z4 sdrive30i, 2008 Audi A4 Cabriolet, 2006 Phoenix Yellow Z4 2.5Si, 2003 Saab 9-3 Convertible
Gone 2017 Iridium SL400, 2015 435d xDrive Convertible, 2012 E350 CDi Convertible, 2010 DSB Z4 sdrive30i, 2008 Audi A4 Cabriolet, 2006 Phoenix Yellow Z4 2.5Si, 2003 Saab 9-3 Convertible
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- Lifer
- Posts: 8771
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Advice required on tyre sizing please
I have a new business venture in mind. Drug dealer. So need the wheels to go with the whole 'thang'.
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.
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
- sars
- Lifer
- Posts: 7052
- Joined: Sun Feb 21, 2010 11:37 am
- Location: East Yorkshire
Advice required on tyre sizing please
Oh nice, replacing the Alpina or is it for the wife?
Gorgeous SFR Z4 M40i
Gone 2017 Iridium SL400, 2015 435d xDrive Convertible, 2012 E350 CDi Convertible, 2010 DSB Z4 sdrive30i, 2008 Audi A4 Cabriolet, 2006 Phoenix Yellow Z4 2.5Si, 2003 Saab 9-3 Convertible
Gone 2017 Iridium SL400, 2015 435d xDrive Convertible, 2012 E350 CDi Convertible, 2010 DSB Z4 sdrive30i, 2008 Audi A4 Cabriolet, 2006 Phoenix Yellow Z4 2.5Si, 2003 Saab 9-3 Convertible
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- Lifer
- Posts: 8771
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Advice required on tyre sizing please
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.
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)
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
- tiglon
- Senior Member
- Posts: 1089
- Joined: Mon Jun 24, 2019 11:20 am
- Location: Essex
Advice required on tyre sizing please
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.Pondrew wrote: ↑Wed Mar 02, 2022 7:34 pmIt's what I do!The.Analyst wrote: ↑Wed Mar 02, 2022 7:32 pmWhy do you need to s**t in this forum and act like a t**t?
I call it a sense of humour, you should try getting one. Amazon probably sell them.
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
2014 E89 35is Valencia Orange 788M wheels (M2 Competition), E90 M3 control arms, Eibach Pro Kit Springs, MHD Stage 1