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01-17-2011, 09:56 AM | #1 |
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Has anybody successfully run 245/40R19?
I want to increase sidewall profile for street ride quality. I understand the decreased responsiveness and heavier weight. I want to keep 19's for looks. I don't want to go back to 18's but I find the ride too harsh on OEM 19's and PS2's.
Has anybody run this tire size on stock suspension? Assuming the tires are 98Y XL (equiv. to rear load rating), any rubbing or other issues running these all around? If it matters I will be either getting Hankook V12 Evo's or Continental DW's. Thanks!! Last edited by smmmurf; 01-17-2011 at 10:17 AM.. |
01-17-2011, 11:04 AM | #2 |
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I can't say whether the tire will fit or not. But I can tell you that increasing the sidewall by 5% will probably not increase ride quality by a noticeable amount. Also ride quality depends on the tire, not all tires have the same strength sidewalls, some are stiffer whereas others have less rigid sidewalls. So if you want any benefit from a 5% taller sidewall you probably want to stay with the same tire you are running now. Otherwise you may get a tire with a stiffer sidewall than what you're running now and that 5% would make no difference.
Hope that helps. Any tire pro's to chime in on this? |
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01-17-2011, 11:14 AM | #3 | |
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Also, I intend to go from PS2 to Hankook V12 Evo which has a softer sidewall than PS2 in the same profile/diamter. Thanks for the input! |
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01-17-2011, 01:26 PM | #4 | |
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Good luck. |
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01-17-2011, 04:23 PM | #5 | |
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Greg Lake Oswego, Oregon, USA 2023 M2 Coupe - Brooklyn Grey/Cognac/CF, 6MT; 2020 MB GLE 450 Last edited by GregW / Oregon; 01-17-2011 at 04:30 PM.. |
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01-17-2011, 06:23 PM | #6 | |
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245/35R19 is a thinner/shorter tire than the 225/45R18's or 225/40R19's that came on our E46 M3's, on a significantly bigger car. I think 40 profile fronts would look fine. I'd put either 245/40R19, stock 265/35R19, or 275/35R19's on the rear. |
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01-18-2011, 07:38 AM | #7 |
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Cannot vouch for the fit of the 245/40R19. It seems that the front of the M3 has more space for wider tires than taller tires, and I think I remember that some who have gone taller got rubbing.
If any have run it successfully, please chime in with what you ran, what your wheel specs were, if you had to use camber changes or make any mods to fit, and whether you ever have rubbing. Smmmurf, if I were you, I would go back to the 18's. You know they fit, the ride worked well for you, and they are the 'right' size. For those interested in the exact diameters involved: 225/40R19: 26" (E46 size) 245/35R19: 25.7" 245/40R19: 26.7" Rear E90 Sizes 265/35R19: 26.3" 275?35R19: 26.5" Note that both of the likely rear sizes are slightly shorter than the 245/40R19. The 275 would probably look close enough that it would look like about the same height.
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01-18-2011, 11:35 AM | #8 | |
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Thanks for the input, I would really like to know if someone has run a taller tire. |
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01-18-2011, 06:24 PM | #9 | |
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If it were me, I would stay with stock 19" size and the Hankook's and I bet you will be happy.
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01-18-2011, 06:49 PM | #10 | |
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01-20-2011, 10:38 AM | #11 |
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with regard to front vs rear sizing, it is a question of handling balance. Going up one size on the rear will, all else being equal, increase understeer slightly. Would you notice it going only one size? Probably not in most cases, but maybe at the limits.
All else being equal, I would go 255 Front with 275 Rear, but 245/275 would not be bad.
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01-20-2011, 10:59 AM | #12 | |
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Ideally I'd drive this car with a square setup (I love loose or neutral cars), but the stock rims aren't sized properly for that. Hrmm.. I'd do 265 all around if that were even possible (or even 245/255). |
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