11-03-2021, 12:09 AM | #1 |
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MSS or AST
Hey guys, I've always heard great things about MSS, I just want to know if I should look at the AST or stick to my gut? Hoping both experiences can shed some light here . Thank you!
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11-03-2021, 05:25 AM | #3 |
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I was gonna do MSS. Realized there was no need for me to adjust and incur the additional cost. After all of the positive reviews and pictures, I went AST.
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11-03-2021, 06:42 AM | #4 |
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Did you consider the KW HAS? They seem to have a better drop up front than MSS right out of the box.
I have the MSS and they ride great, particularly in the rear which is helped by the second spring (no crashy ride like you get on some cheap spring kits) No idea what the AST ride like but the drop looks good! My MSS have settled quite a bit but probably not enough for the stance boys Rides great! |
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11-03-2021, 09:18 AM | #5 |
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MSS is 1100 bucks and AST is definitely less. Personally I went with MSS because it was the only option in May of 2021 and I grateful it was. I like them so much that I just moved the same parts over from my RWD to X Drive. This says volumes about the part(s). I do feel the car drives better than my M8 on KW's (again says volumes).
I am not a retailer so my only bias or play is ownership and the MSS is tremendous. The spring rates that lead to the compression and rebound are incredible. I have never tried AST so I can not give an opinion. I truly have no idea my car is lowered with MSS every single time I drive it. I personally like a slightly lower car than fixed springs offer so MSS works for me and the 600 bucks more or so that I paid. Do I readjust it often, hell no- Ill never adjust it so the HAS part is not reflective in my choices. In reality the BMW dampers on the G8X are so much better than previous M3/4 iterations so almost any spring will be great unless the spring rates are really low and you get the bounce back!!!
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11-03-2021, 10:42 AM | #6 | |
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11-03-2021, 10:45 AM | #7 | |
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11-03-2021, 11:26 AM | #8 |
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I went with MSS, no regrets what so ever. Yes it costs more, and takes time to settle (I am at 1K miles front is settling well). For the rear mine is same as Vic's with no rub with adults and kids.
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11-03-2021, 11:27 AM | #9 | |
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This is not under flex but gives you good idea:
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11-03-2021, 11:28 AM | #10 |
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KW can go just as low as the MSS--- I personally still have about 10mm left if I wanted to go lower.
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11-03-2021, 11:38 AM | #11 |
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Not sure what tires since cars not here yet. Ben will be installing it and he is all about the MSS. I trust him though. Don't mind paying the $. Just wanted some options
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11-03-2021, 12:03 PM | #12 | |
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The Pirelli is a more square tire and will fill the wheel wells even better than the PS4 so you wont have to lower it as much to get the same appeareance. I know this because we did the same MSS drop on both my G80s with one having Pzero and now I have PS4.
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11-03-2021, 12:22 PM | #13 | ||
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11-03-2021, 12:46 PM | #14 |
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I did on the 2021 G80 but drove it about 250 miles first to allow all things to settle. The camber was barely off and so was the toe. The most important measurement for wear is toe as scrubbing can occur which will kill tires much faster than camber. But these cars dont have camber adjusters from the factory but we still were able to get the car within spec in all measurements.
On the 2022 my local alignment shop does not yet have the specs loaded up so Im waiting until next week when they arrive. They have a vin scanner that autopopulates the specs and its not yet uploaded.
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11-03-2021, 12:51 PM | #15 |
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We would recommend either the KW HAS kits if you want the option of adjustable ride height or AST springs if looking to close the gap and retail a stock ride. Both options come in at a lower cost than the MSS springs.
Many have been happy with going the AST route and pocketing the extra $$ saved for more mods. Check out the AST thread for plenty of examples and reviews.
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11-03-2021, 03:42 PM | #16 |
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Both are really good options, we chose the MSS for the shop's M4.
We'll be doing the install mid this month and posting a step by step video
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12-06-2021, 11:54 PM | #17 | |
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12-07-2021, 02:33 AM | #18 |
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Is H&R an option? What stance/look are you going for? I currently have AST’s loved how they feel but I went with them knowing I’ll be going full coilovers soon and they aren’t low enough. However, I am going for a more tucked look now that I have my HRE’s on.
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12-07-2021, 06:20 AM | #19 |
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I feel I’m the H&R has kit ambassador now lol. Rides great with no issues. I posted A review yesterday with more pics I’ll leave this picture here for reference.
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12-07-2021, 08:13 AM | #20 |
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Im going with the KW has kit. Appt later this month to have it installed. I originally ordered it way back before my car arrived but held off to see some installed first before taking the plunge. The MSS sat too high in the front for my liking. I plan to pretty much go as low as I can in the front and matching the rear gap to the front gap. Essentially about a finger gap all the way around
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12-07-2021, 08:38 AM | #21 |
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Yes... It has alot of room in raise and even has 10mm more to lower.
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