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12-25-2020, 06:57 PM | #23 |
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ryanwarriors9200.00 |
12-26-2020, 03:09 PM | #24 |
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01-09-2021, 05:13 PM | #26 |
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Clean car yesterday but Little frosty this morning
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Ulisse37.00 StradaRedlands5964.00 |
01-13-2021, 09:51 PM | #29 |
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01-14-2021, 11:27 AM | #30 | |
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Just waiting to hear back and see if shipment will get to me |
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01-17-2021, 12:41 PM | #31 |
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New double slat grills in today
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ezaircon4jc5216.50 |
01-24-2021, 07:33 AM | #33 |
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Car needs a wash but finally got round to fitting new front splitter yesterday 👌🏻
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ezaircon4jc5216.50 |
01-24-2021, 11:39 AM | #34 |
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Another update!
Quick photo of new wheels to go on this week once I get new valves for them Genuine 437m 255/35/19 super sports on the front 285/35/19 Pilot sport 4s on the rears hoping they go on 😂 |
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01-24-2021, 02:08 PM | #35 |
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That's too much of a difference (3.5%) front to rear. You should stay around 2% at the very most. If you have X-Drive you must stay within 1% or plan on a new transfer case. 255/40 would be better on the front.
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01-24-2021, 03:13 PM | #36 | |
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What's reason for them been too much ? No one else has said this to me |
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01-24-2021, 07:42 PM | #37 | |
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This is to calculate compatible sizes: https://tire-calc.com/ This is just the comparison between front and rear: https://tire-calc.com/comparison/255...nd-285-35-r19/ Without comparing to the stock staggered sizes (245/40/19 & 275/35/19), your speedometer/odometer may also be off by a fair amount. |
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ryanwarriors9200.00 |
01-24-2021, 08:38 PM | #38 |
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I've read somewhere on this forum that having a significant diameter difference between front and back can cause ABS and anti-skid / traction control issues too since rotational differences are used to actuate both. I tend to agree that 3% is too much difference, and also in my humble opinion the front tires will look too thin / small compared to the back.
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ryanwarriors9200.00 |
01-24-2021, 11:20 PM | #39 | |
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To keep the tyre width he would have to have a 255/40 up front instead of 255/35. Having wider tyre out back would need a lower aspect ratio than the one up front. Yes, it will mess with the ABS & traction control; I forgot to mention that. Can also induce squirrely handling. |
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ryanwarriors9200.00 |
01-25-2021, 03:19 AM | #40 | |
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Question is do i go up a size at the front then or down a size at the back ? These were been run on an m4 for a fair few months and he had no issues? |
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01-25-2021, 04:39 AM | #41 |
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What if I went 235/40/19 up front that's still within limits going off the calculator
When the rears need changing then down size them to 265/35/19 or 275/35/19 |
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01-25-2021, 09:29 AM | #42 | |
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tyre width (across the tread): 255mm diameter of tyre hole: 19 inches Ratio of tyre height (from wheel rim to tread) to tyre width: 35%. Therefore, and as you already stated, he can keep the rear tyres and change the front ones for 255/40/19.
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ezaircon4jc5216.50 |
01-27-2021, 02:00 PM | #43 |
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Thanks everyone for the information it was taken on board and I picked up a bargain set of pilot sport 4S for the front at 255/40/19 to match the rears now so shouldn't have any issues
(Not sure why it's cut off half of the top and bottom on each image) |
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StradaRedlands5964.00 |
01-27-2021, 02:55 PM | #44 |
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You've already done it so this is just a reminder for others. The tread pattern needs to be the same front to rear or squirrely handling can be induced with different grip at each end.
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ryanwarriors9200.00 |
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