01-22-2016, 11:41 PM | #1 |
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M5 343m with 315 R888s
There are a few on the board that run this setup. Thanks George at MSR for recommendation. It works for the R888s, but wouldn't for PSS.
Thought there might be interest in seeing what it looks like. |
01-23-2016, 12:26 AM | #4 |
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How do they hook up?
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01-23-2016, 12:57 AM | #6 |
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01-23-2016, 12:58 AM | #7 |
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01-23-2016, 03:27 AM | #8 |
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315 mm tire is too wide for a 10" rim. You need at 10.5"-11.5" wide rim for this tire (i.e M6 343M and not M5 343M)
http://www.tirerack.com/tires/tires....tnum=13YR0R888
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01-23-2016, 07:59 AM | #9 | |
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10.5 would be ideal, but on the M5 that would end up rubbing your fenders and eating through them. I will not run this setup on a road coarse. For straight line grip on street and track they have been documented to work well. I did read that on tire rack too before purchase. Also discussed in detail with Tire shop and other members that run the setup as I was concerned too. The extra .5 inches would reduce the bulge ever so slightly. For daily use I will use my M6 wheels and 305 PSS. |
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01-24-2016, 01:43 AM | #10 | |
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315 on stock rims too dangerous IMO. George from MSR has a m6, the m6 rims are .5 inchs wider, maybe he knows that, maybe he doesn't. Just want to give you my .2 cents.
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01-24-2016, 02:17 AM | #11 | |
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As others have mentioned, 305's are too wide for 343M M5 rears... let alone 315's. |
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01-24-2016, 07:42 AM | #12 |
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George has an M6, M5 and M4. He tried the M6 wheels on his M5 and it rubbed with R888s. Fender rolling might be a good option to get the M6 wheels to work.
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01-24-2016, 02:36 PM | #13 |
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I didn't know he had a f10 m5. I thought he had the v10.
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01-24-2016, 03:15 PM | #14 |
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those rims look fine indeed recommended tire is not for that width, but middly uses it with his 800+whp car and its fine and i know he oesnt baby his car at all, it does look funny but eft it , it hooks its good to me..lol.. I will be doing the same also when i catch a good deal on those 343's
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01-24-2016, 03:30 PM | #15 | |
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Let me tell you something buddy, if this car has an engine generates 900+HP then all other components (DCT, Diff, axle, cooling, ...) will be blown up shortly since non of them are design or rated for this type of power...
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01-24-2016, 03:36 PM | #16 | |
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Quote:
http://f10.m5post.com/forums/showthread.php?t=1204325 |
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01-24-2016, 03:42 PM | #17 | |
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You should read this article to understand the difference between bhp and whp: https://www.carthrottle.com/post/the...whp-explained/ And this one: http://www.badasscars.com/index.cfm/...prod/prd64.htm
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01-24-2016, 03:44 PM | #18 | |
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01-24-2016, 03:58 PM | #19 | |
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The difference between whp and flywheel hp is the drivetrain loss which is 12-15% for our cars so basically if you claim your dyno measured 800 whp (800 hp at rear wheel) it means your tuned engine is generating 12-15% more power or 900+ HP right? having said that, you are transferring over 900 hp to transmission input shaft and something about 800-850 hp to drive shaft and almost the same power to axle... not saying it's not possible but for sure these components are not rated to these numbers. on the other hand your DCT is rated to 700 nm (516 lb-ft) as a safe number; however I believe up to 600 lb-ft is safe since German's are conservative... now please let me know by 800 whp you meant your dyno measured 800 hp at wheel or that's the number after drivetrain loss correction? meanwhile you said if we do not launch.... I believe this car is produced to be launched with no restriction... what you are saying is like to say go to restaurant but don't eat anything then you are fine
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01-24-2016, 04:07 PM | #20 |
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The stock M5 has dyno report by IND shows 527 whp (horse power at wheel) and now you are claiming the tuning to 820 whp. This means the increase of ~300 hp at wheel... do you really think it's safe to have about 60% tuning? do you really think BMW is that much generous (read stupid) to over engineer and spend (waste) lots of money to build a drivetrain to be able to hold that much power but not being in used? sorry but to me (as an design engineer) this is ridicules...
You should see this: Dyno Results: F10 BMW M5 underrated – 527 RWHP http://www.bmwblog.com/2012/09/10/dy...ated-527-rwhp/
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01-24-2016, 04:14 PM | #21 | |
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but wait, what about differential or axle? Have you ever upgraded them? or you basically removed the weakest point from clutch and moved it to another point? and about your last comment: why would I launch the car? the same reason I get M5 (or M6 in my case) instead of 535/550/640/650 FYI I used to have 2 650i F13 (2012 and 2013) but I jumped to M6 for more power and more torque to be able to catch 60 mph from standstill in less than 3.7 second and not 4.5 second... that's all anyways, good discussion buddy... and Goodluck
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01-24-2016, 04:21 PM | #22 | ||
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Im close to 700whp and not bhp (no problems at all) Besides who drives stock car nowadays these cars are meant to be driven My manual m5 wnt needs clutches at 800whp. I like to use whp no bhp so they can figure crank hp which is pointless to me when they say bhp and not what it puts on the ground. These snails are on the car so another 800whp in the East Coast |
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