02-06-2012, 06:55 PM | #1 |
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Tire upgrade for stock 1M wheels
I would like to upgrade the tires on my 1M to Michelin Pilot Super Sports and retain the factory wheels. I am thinking 255 or 265/35/19 fronts and 275/35/19 rears. Can anyone provide any input what larger tire sizes have been used with the factory 19x 9 & 10 wheels ?
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02-06-2012, 11:08 PM | #2 | |
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You can check Tirerack as far as dimensions and proper available sets that'll fit, the rear 10s can do 295/30 (as 285 is not available in the PSSs). Use this to see how your speedometer reading will change once you move from stock sizing http://www.miata.net/garage/tirecalc.html
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02-07-2012, 01:29 AM | #3 | |
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Does a 255 / 295 setup require spacers front or rear ?
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02-07-2012, 04:14 PM | #5 |
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02-07-2012, 08:49 PM | #6 | |
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Stock PS2's: 245/35/19 - diameter = 25.8" 265/35/19 - diameter = 26.3" PSS: 255/35/19 - diameter = 26.0" 265/30/19 - diameter = 25.3" 265/35/19 - diameter = 26.3" 295/30/19 - diameter = 26.0" 265/30r19 F and 295/30r19 R shouldn't rub the top of the fender liner due to the smaller diameter than stock, but they are beeefy and better suited for a 9.5"/10.5" rim combo. |
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02-08-2012, 12:16 AM | #7 |
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I should clarify, I was referring to a 265/35/19 PS2 tire, that does rub. I have not tried with the same size for a PSS, but as you can see the diameters as given by TR are the same, so there is nothing to indicate moving from a PS2 to a PSS in that size (265/35/19 up front) will cure the rubbing. And it is not a matter of a fender roll (those are done courtesy of the factory, contrary to the 135i), it rubs top of the fender inner liner. So if a PS2 rubs, I think it is a safe bet the PSS will rub, as if anything, it is a lot more square tire than the PS2 (the edges don't seem to curve as much as on the PS2s, but rather more of a square setup like the Bridgestone RE-11s)
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02-08-2012, 05:10 PM | #8 |
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I am definitly going wider on the next set of tires. First and most of second gear is kind of a joke right now. Here's what I found on Tirerack. All prices are before shipping.
Here's the 3 or 4 best options as I see them: 265/30ZR19 XL Michelin Pilot Super Sport 295/30ZR19 XL Michelin Pilot Super Sport $1568 265/30ZR19 XL Continental ExtremeContact DW 285/35ZR19 Continental ExtremeContact DW $1064 265/30ZR19 XL Hankook Ventus V12 evo K110 295/30ZR19 XL Hankook Ventus V12 evo K110 $1044 265/30ZR19 XL Hankook Ventus V12 evo K110 285/30ZR19 XL Hankook Ventus V12 evo K110 $1012 The Michelins PSS seem to be the uncontested best of the best. At 50% more cost than the other options though it may not be worth the money to some. Between the other two it seems the Contis are a bit better. But with the Hankooks you can get to the 295 width in the rear. I have a few months to go before I need new shoes. I'm hoping some other folks try a few of these out in the mean time! |
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02-08-2012, 08:33 PM | #9 |
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Robert, here are some statistics perhaps to help you in your decision when it comes time for it (at least from a dimension standpoint):
Stock fitment front: 245/35/19 Sidewall: 3.4 Radius: 12.9 Diameter: 25.8 Circumference: 80.9 Revs/Miles: 783 Going to 265/30/19 Sidewall: 3.1 Radius: 12.6 Diameter: 25.3 Circumference: 79.4 Revs/Miles: 798 Speedometer reading with non-stock tire is 1.9% too fast (when traveling and your speedo is reading 60mph, you are actually going 58.9mph) Going to 255/35/19 Sidewall: 3.5 Radius: 13 Diameter: 26 Circumference: 81.8 Revs/Miles: 775 Speedometer reading with non-stock tire is 1.1% too slow (when traveling and your speedo is reading 60mph, you are actually going 60.6mph) ******************* Stock fitment rear: 265/35/19 Sidewall: 3.7 Radius: 13.2 Diameter: 26.3 Circumference: 82.6 Revs/Miles: 767 Going to 295/30/19 Sidewall: 3.5 Radius: 13.0 Diameter: 26.0 Circumference: 81.6 Revs/Miles: 777 Speedometer reading with non-stock tire is 1.3% too fast (when traveling and your speedo is reading 60mph, you are actually going 59.2mph) Going to 285/30/19 Sidewall: 3.4 Radius: 12.9 Diameter: 25.7 Circumference: 80.8 Revs/Miles: 784 Speedometer reading with non-stock tire is 2.2% too fast (when traveling and your speedo is reading 60mph, you are actually going 58.7mph)
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02-08-2012, 08:55 PM | #10 | |
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You can get the extremecontact DW in 285/30/19, but tirerack recently dropped that size from their site last week. It's still available on other sites though. |
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02-08-2012, 08:56 PM | #11 |
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Why wouldn't you guys just go one size bigger all around with the PSS's
From: F: 245/35/19 R: 265/35/19 To: F: 255/35/19 R: 275/35/19 This way you are keeping the same ratio between front and rear as stock but still getting more rubber down. |
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02-08-2012, 09:12 PM | #12 |
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Due to mad amounts of rubbbing as someone already pointed out. (in the front especially)
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02-08-2012, 10:12 PM | #13 |
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02-08-2012, 10:39 PM | #15 |
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The PSSs are fairly new and Michelin is continuing to make more sizes available. I am hoping 285/30 is one of them!
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02-08-2012, 11:55 PM | #16 | |
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Last edited by HP Autosport; 10-09-2012 at 12:25 PM.. |
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02-12-2012, 01:49 PM | #17 | |
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Does the pictured car have any spacers on the wheels?
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02-12-2012, 03:56 PM | #18 |
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02-12-2012, 06:41 PM | #19 |
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02-12-2012, 06:44 PM | #20 |
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02-13-2012, 01:41 AM | #21 |
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02-13-2012, 05:23 PM | #22 |
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