Tyre size for 19 inch rims

[Chriseybaby]

I'm looking to change my 18 inch alloys now the tyres are getting low and have seen some 19 inch rotors that seem the right offset and size.

Only thing is they have 245/40/19 tyres on them, am I right in thinking I would need 255/40/19?

Thanks

[dean warren]

I'm looking to change my 18 inch alloys now the tyres are getting low and have seen some 19 inch rotors that seem the right offset and size.

Only thing is they have 245/40/19 tyres on them, am I right in thinking I would need 255/40/19?

Thanks

Look on your tyre pressure chart in the fuel flap, it generally covers the options range for wheel sizes on the car.


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[Chriseybaby]

Thanks, I did look and it only shows tyre sizes for 17 and 18 inch rims

[dean warren]

Oh, mine was a BiTDi and it had 18 19 and 20 inch on, but sold it in June so cannot check it. Sorry


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[FrenchAudi]

I assume your current tyres are 240/45/18, not 19 as you wrote above. To keep approximately the same rolling radius, you should fit 245/35R19.

Calculator is here Tyre Size Calculator

[beemerboy9]

Hi Chriseybaby,

Could you confirm that your question is in regard to the car in your signature line - a C6 A6 3.0 TDi Le Mans.

You have posted in a C7 forum and will receive some very confusing replies if your car is a C6.

[Chriseybaby]

The current tyres are 245/45/18 and I was looking to get alloys with 245/40/19

Sorry my signature is out of date, I’ve got a 2014 a6 3.0 tdi

[beemerboy9]

According to my 2014 brochure the optional 19" Audi wheels would have left the factory with 255/40 R19 tyres. However the 245/40 RF19 will fit just fine and give you a more accurate speedo reading.

[Whippy53]

Should be
255/40 R19 Y (100)