Sporty G37 thread

[Char]

OK, in that case mine are still going strong after 3 years,  25k miles,  5 track days, and numerous autocross miles.  If they last on my car I'm sure they'll be fine durability wise for Sporty.  I don't know about his comfort or valving requirements, but they're not junk just waiting to fail either.

While everyone claims BCs =/= D2 Ksport ETC, from my understanding they are actually different. BC's will be my next purchase, as the PSS10's use progressive springs, and while they can be swapped that's even MORE cost than the steep entry. Koni based units are not in the cards for me - they seem more failure prone in comparison to monotube units...

[12,000 RPM]

I've had such mixed luck with twin tube setups. I had Koni Yellows on my first Accord in NYC for like 2-3 years and those rode great. Like a magic cloud. I also had some cheapo NEX SS coilovers on my 2nd Maxima... twin tube, lowered 3", rode like a champ for about a year. Weirdly enough the STs on the Civic are twin tube too, and NC roads are a lot better but I had a failure with them. I think this go around I'm gonna try the monotube thing... but I'm still leery of BC.... the name just says "knock off Buddy Club" to me. I like the Powertrix SS, will probably do that.

[r0tor]

Ride comfort comes down to valving.  Koni and Bilstein use digressive valving so you can have ample damping at slow shock speeds for handling without having exponentially more damping at high shock speeds - which effect ride comfort.

Virtually any set of linear rate shocks that are tuned for performance are going to ride like ass regardless of being twin tube or monotube.

Monotube will generally have better reliability and resist fading when bring driven hard on the track.

[12,000 RPM]

Pretty much all coilovers worth buying on the market have digressive shock valving. And you don't want exponentially more damping at high shock speeds... here's some marketing copy from Fortune Auto

[r0tor]

Well, BC racing is a shit show http://www.iwsti.com/forums/gd-general/168885-bc-racing-er-series-coilover-comprehensive-review.html

Your fortune auto pic shows a complete run away on rebound and most Google pics show 2-3x more rebound at 9 in/s then 2 in/s even with their "ultra digressive" model.. So they suck as well

Powertrix in the same boat as Fortune... Probably because they use the same shit

[r0tor]

Also IMO running remarkably more rebound then compression is pure silliness

[12,000 RPM]

Yeech those dyno plots look pretty bad. Fortune Auto 510s don't look too bad though:



And Bilstein has its own problems:

https://my350z.com/forum/brakes-and-suspension/463756-bilstein-pss-family-2.html#post7971259

I mean here are Konis which I love and swear by:



Honestly I'm not going to worry about it... getting legit shocks costs a fortune and roads are pretty smooth here.  Not that much high speed stuff. As long as low and mid speed stuff is OK, company rep is somewhat legit and lowering is separate from preload I'm good

[r0tor]

Of course FatCat custom valved shocks are going to be better then stock PSS's... They cost a shit ton

Still, for the price you have to be crazy not to go Bilstein PSS

[12,000 RPM]

They have the same problems as everyone else for more $$$. Actually maybe more with that adjuster issue

[MrH]

There are definitely limitations with PSS9/10s. There's only so much you can do just by preload adjustment, which is all that dial does. I wouldn't use fat cat as your proof for anything. Dude is a total moron.

[12,000 RPM]

https://www.z1motorsports.com/suspension/ohlins/ohlins-350z-dfv-road-and-track-coilovers-p-9273.html

[Cookie Monster]

Are the spring rates and valving for the 350Z close enough for the G?

[12,000 RPM]

They make them for the V36 platform too....

https://www.aj-racing.com/catalog/?product=ohlins-dfv-road-track-suspension-nissan-370z-09-13-z34

11k/10k.... a little stiff but no problem with God shocks and more weight.

[r0tor]

While I would whole heartily applaud the purchase of Ohlins... jumping from wanting crap Chinese shocks to proposing what has to be about the most expensive shocks is very perplexing

[12,000 RPM]

While I would whole heartily applaud the purchase of Ohlins... jumping from wanting crap Chinese shocks to proposing what has to be about the most expensive shocks is very perplexing

Those Chinese shocks are no more crap than the Bilsteins you proposed, at least according to the shock dynos you use as the barometer of crap/good

Ohlins have good build quality, good adjustability, good damping. Your default disposition is to whine though so I'm not surprised.

[MrH]

Lol, those Chinese shocks are definitely worse than the cheapest Bilsteins.

Ohlins are really nice, but also really expensive.

[Char]

Lol, those Chinese shocks are definitely worse than the cheapest Bilsteins.

Ohlins are really nice, but also really expensive.

Ehhh, I don't know about that. Based on my experience - while I expect Bilstien to have better valving and longevity - the quality has been hit or miss, And the pricing is quite outrageous at times. Non adjustable, PROGRESSIVE SPRUNG coilovers, for 1.2K? Saying it's "better" without any way objectively measure it, doesn't make it true.

[r0tor]

Uhh... Bilstein had a lifetime warranty, crap Chinese shock not so much

[Soup DeVille]

Those Chinese shocks are no more crap than the Bilsteins you proposed, at least according to the shock dynos you use as the barometer of crap/good

Ohlins have good build quality, good adjustability, good damping. Your default disposition is to whine though so I'm not surprised.

I'd trust the Bilsteins to last, the knockoff Chinese ones are a roll of the dice.

[MrH]

Ehhh, I don't know about that. Based on my experience - while I expect Bilstien to have better valving and longevity - the quality has been hit or miss, And the pricing is quite outrageous at times. Non adjustable, PROGRESSIVE SPRUNG coilovers, for 1.2K? Saying it's "better" without any way objectively measure it, doesn't make it true.

Why are you capitalizing "PROGRESSIVE SPRUNG" and why do you think that's significantly cheaper than a linear spring

[Char]

Why are you capitalizing "PROGRESSIVE SPRUNG" and why do you think that's significantly cheaper than a linear spring

So said anything about Progressive springs being "cheaper?" I didn't. What they are is shit for anyone who wants to do any sort of aggressive driving, which is why many people convert them over to a linear spring.

Believe me, I like Bilstien products, but it's hard to justify the cost difference between "Chinese" coil overs and Bilsteins for anyone who isn't doing 3+ track days a year, and even then, We have nothing to truely compare them against.

I bought a used set of PSS9/10s with the intent of revalving them for higher spring rate linear springs - at that point, I could have bought 2 sets of "Chinese" coilovers. For a primarily street driven car, BC (KSPORT is trash, I don't care what Sporty says) is fine.

[Char]

I'd trust the Bilsteins to last, the knockoff Chinese ones are a roll of the dice.

Eh, they can be hit or miss. Most E90 guys no longer run them, but there were some early quality concerns. Longevity wise, I don't expect them to be the type that needs frequent rebuilds.

[12,000 RPM]

I agree that K-Sport is trash, never said otherwise.

Also not sure what relevance a lifetime warranty has on a wear item like shocks, unless that means free replacements for life. And even if that's the case, it's still a huge PITA when one blows. What do you do? Run one corner with your OEM shock? One end of the car? There's no reason shocks should blow down here, the roads are not bad at all.

[r0tor]

In a normal world the warranty would indicate it's designed to not have to be rebuilt/replaced every couple of years...

[12,000 RPM]

In a normal world the warranty would indicate it's designed to not have to be rebuilt/replaced every couple of years...

We don't live in a normal world. In a normal world Bilstein would not cram the full range of damping adjustment in half a turn.

[565]

God damn,  I've had these PSS tires for about a week now.  These tires plus the rear sway upgrade makes the G37x an absolute weapon around corners.  I'm just blowing past everyone around the corners, dry or wet.  As good as the PSS tires are on the z06, having them on a more normal car just makes a bigger difference.  I don't think I can ever go back to having all seasons on a daily driver now.

[Laconian]

[r0tor]

We don't live in a normal world. In a normal world Bilstein would not cram the full range of damping adjustment in half a turn.

You don't need to explain that you don't live in the normal world... really you don't   

[12,000 RPM]

You don't need to explain that you don't live in the normal world... really you don't   

Strong comeback!

Regarding PSS vs DWS06s, Tire Rack tested both on the same F30:

https://www.tirerack.com/tires/tests/chartDisplay.jsp?ttid=218

https://www.tirerack.com/tires/tests/chartDisplay.jsp?ttid=216

5ft difference braking from 50mph, 0.02g around the skidpad in the dry in favor of the PSSs.... 10ft difference and 0.02g difference in the wet in favor of the DWS06s. DWS06s are a little squishy on the Civic but they have a 50 series profile. Not as sexy as the PSSs on the internet but they're a good tire year round.

[Rich]

God damn,  I've had these PSS tires for about a week now.  These tires plus the rear sway upgrade makes the G37x an absolute weapon around corners.  I'm just blowing past everyone around the corners, dry or wet.  As good as the PSS tires are on the z06, having them on a more normal car just makes a bigger difference.  I don't think I can ever go back to having all seasons on a daily driver now.

How are you blowing past people in the corners?🤔