Tires size
08-12-2009, 07:18 AM
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Most people use 245/35/20 and 275/30/20 for 20 inch wheels, which return 213.033cm and 211.322cm diameter respectively.
The stock diameters are front 205cm and rear 203cm.
But for 19" inch, most people use 245/35/19 and 275/30/19(the same aspect ratio as 20"), which return 205 and 203cm diameter respectively
Does that mean I can use 245/40/19 and 275/35/19 for 19inch, which also return 213cm and 211cm (same size as the 20")?
I have a non-sport 535i.
Instead of lowering the car to reduce the wheel gap, maybe I can buy taller tire wall?
The stock diameters are front 205cm and rear 203cm.
But for 19" inch, most people use 245/35/19 and 275/30/19(the same aspect ratio as 20"), which return 205 and 203cm diameter respectively
Does that mean I can use 245/40/19 and 275/35/19 for 19inch, which also return 213cm and 211cm (same size as the 20")?
I have a non-sport 535i.
Instead of lowering the car to reduce the wheel gap, maybe I can buy taller tire wall?
08-12-2009, 07:21 AM
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Originally Posted by edkwok99' post='973663' date='Aug 12 2009, 08:18 AM
Most people use 245/35/20 and 275/30/20 for 20 inch wheels, which return 213.033cm and 211.322cm diameter respectively.
The stock diameters are front 205cm and rear 203cm.
But for 19" inch, most people use 245/35/19 and 275/30/19(the same aspect ratio as 20"), which return 205 and 203cm diameter respectively
Does that mean I can use 245/40/19 and 275/35/19 for 19inch, which also return 213cm and 211cm (same size as the 20")?
I have a non-sport 535i.
Instead of lowering the car to reduce the wheel gap, maybe I can buy taller tire wall?
The stock diameters are front 205cm and rear 203cm.
But for 19" inch, most people use 245/35/19 and 275/30/19(the same aspect ratio as 20"), which return 205 and 203cm diameter respectively
Does that mean I can use 245/40/19 and 275/35/19 for 19inch, which also return 213cm and 211cm (same size as the 20")?
I have a non-sport 535i.
Instead of lowering the car to reduce the wheel gap, maybe I can buy taller tire wall?
You can, but it may rub under load (like when you're carrying passengers and luggage). Ideal is 245/35/19 and 275 or 285/30/19 - it won't rub that way. Some do run 35 sidewalls in the rear though so maybe you'll be okay.
08-12-2009, 10:57 AM
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If 245/40/19 and 275/35/19 rubs, then the 245/35/20 and 275/30/20 will rub too right?
They have the same diameter.
How do people get away with 245/35/20 and 275/30/20?
They have the same diameter.
How do people get away with 245/35/20 and 275/30/20?
08-12-2009, 11:51 AM
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people get away with those sizes (myself included) because of rolling/cutting the fenders. we recommend those sizes for 20s because of the thicker sidewall, more rim protection. according to rolling diameter the sizes for 20s should be 245/30/20 and 275/25/20 instead.
08-12-2009, 12:18 PM
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Eddie, for 19"s go with the proper sizing:
- 245/35/19 fronts | 275/30/19 rears, (for 9" to 9.5" wide rims), or
- 245/35/19 fronts | 285/30/19 rears (for 10" wide rims)
08-12-2009, 12:20 PM
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Originally Posted by mrfva' post='974134' date='Aug 12 2009, 01:18 PM
Eddie, for 19"s go with the proper sizing:
- 245/35/19 fronts | 275/30/19 rears, (for 9" to 9.5" wide rims), or
- 245/35/19 fronts | 285/30/19 rears (for 10" wide rims)
+1 that's what I use and there has been no problem with ride quality. It handles the bumps that same as stock wheels did.
08-12-2009, 12:31 PM
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Originally Posted by mrfva' post='974134' date='Aug 12 2009, 01:18 PM
Eddie, for 19"s go with the proper sizing:
- 245/35/19 fronts | 275/30/19 rears, (for 9" to 9.5" wide rims), or
- 245/35/19 fronts | 285/30/19 rears (for 10" wide rims)
I want to know if 245/40/19 and 275/35/20 will work on nonsport setup, which the rolling diameter is equivalent to 245/35/20 and 275/30/20
08-12-2009, 12:35 PM
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Originally Posted by edkwok99' post='974158' date='Aug 12 2009, 03:31 PM
I am aware of the proper sizing to keep the rolling diameter the same.
I want to know if 245/40/19 and 275/35/20 will work on nonsport setup, which the rolling diameter is equivalent to 245/35/20 and 275/30/20
I want to know if 245/40/19 and 275/35/20 will work on nonsport setup, which the rolling diameter is equivalent to 245/35/20 and 275/30/20
It's already high enough as it is, being on a non-sport
suspension, going with the 40/35 series will simply raise
it more.
08-12-2009, 09:11 PM
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https://5series.net/forums/index.php...opic=79792&hl=
It can be done.
Someone is running 275/35/19 on rear with nonsport setup.
It can be done.
Someone is running 275/35/19 on rear with nonsport setup.
08-12-2009, 09:28 PM
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Originally Posted by mrfva' post='974161' date='Aug 12 2009, 03:35 PM
Yes it may work, but it will also raise your car by ~ 1.0".
