Which lowering springs…?

[concept]

I recall that many years ago, there was more talk about how wheel spacers can reduce the life of wheel bearings. Here's a query of this topic using AI results:


Wheel spacers are a topic that often sparks debate among car enthusiasts. Let’s delve into the science and engineering behind them to understand their impact on wheel bearings.

1. Scrub Radius:
   • The scrub radius is the distance from the center of the tire contact patch to the point where the kingpin axis intersects the ground.
   • If the kingpin axis intersects the ground inboard of the center of the tire contact patch, the scrub radius is positive. If it intersects outboard, the scrub radius is negative.
   • Rear-wheel-drive cars typically have a small positive scrub radius, while front-wheel-drive vehicles tend to have a negative scrub radius.
   • Altering the scrub radius affects how forces (like braking, acceleration, and impacts) act through the suspension.
2. Kingpin Offset:
   • The kingpin offset is the distance between the center of the wheel/tire assembly and the kingpin axis.
   • Normal kingpin offset values range from about 50 mm to 100 mm.
   • Achieving a small kingpin offset is desirable for stability and handling.
3. Wheel Spacers and Bearings:
   • Wheel spacers push the wheels further away from the hub, altering the scrub radius and kingpin offset.
   • Larger wheel spacers increase leverage, which can lead to additional load on the wheel bearings.
   • This increased stress may result in premature wear and failure of the bearings .

In summary, while wheel spacers can enhance aesthetics by widening the stance, they do introduce potential risks to wheel bearings. It’s essential to weigh the trade-offs carefully and consider the impact on safety and longevity when using wheel spacers.

I am not taking sides yet, as I do not have lowering springs at this time. Maybe our wheel bearings are very easy to replace, making this a moot point.......

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[ozgurm]

I have no experience with the other options but I’m loving my RSR Super Down Springs! They are comfortable as I’ve made multiple 4-9 hour trips on them. I definitely recommend these springs and I would wholeheartedly purchase them again!

sorry to bother but can I get the link to these springs !

 

[Meraki Autoworks]

sorry to bother but can I get the link to these springs !

Says RSR Super down so here you go.

https://merakiautoworks.com/products/rs-r-2020-toyota-supra-a90-super-down-springs

-Josh

 

[Bishop]

Mine is on Eibach Pro with 13/15. I don't know why it doesn't at least come from a factory like this.

 

[Timmy_Jones]

Whiteline which isn’t as aggressive as something like Eibach (us) or rsr super down but a little lower than the EU Eibach. They’re stiffer than stock, but feel and look great. I even kept my ZL1 rock guards. No rubbing. Don’t even need to mess with factory bumpstops

 

[NicKnack]

Whiteline which isn’t as aggressive as something like Eibach (us) or rsr super down but a little lower than the EU Eibach. They’re stiffer than stock, but feel and look great. I even kept my ZL1 rock guards. No rubbing. Don’t even need to mess with factory bumpstops

I think Eibach changed their US springs, I installed them on my MT and it looks like it has a pretty similar drop to your Whitelines.

Even the drop advertised for the auto springs seems to have changed to 1.3" Front and 1.0" rear. MT advertised drop is 0.9" Front and 0.8" Rear

 

[Timmy_Jones]

I think Eibach changed their US springs, I installed them on my MT and it looks like it has a pretty similar drop to your Whitelines.

Even the drop advertised for the auto springs seems to have changed to 1.3" Front and 1.0" rear. MT advertised drop is 0.9" Front and 0.8" Rear

I agree, Eibach is usually SUPER low like the RSR and swift springs. Whiteline is great so far...if I were to do it again I might just do the Eibach Euro spec and save a few MMs? Whiteline's support SUCKS and were zero help when I had issues.

 

[NicKnack]

I agree, Eibach is usually SUPER low like the RSR and swift springs. Whiteline is great so far...if I were to do it again I might just do the Eibach Euro spec and save a few MMs? Whiteline's support SUCKS and were zero help when I had issues.

Yeah it seems like either Eibach product is a solid pick now. I liked that they came with new bump stops and dust boots (Since I like keeping the OEM parts just in case). I did add some additional Tein spring silencers on each rear spring to every other coil on the tightly wound section of the spring. I'm not sure if they were 100% needed but I'd rather not have to go back and add them after if there's noise without them

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