# Rear strut bar vs Rear seat \[Structural rigidity\] **URL:** \ **Category:** SON240sx Automotive\ **Created:** [February 28, 2013, 7:35am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983 "2013-02-28T07:35:01Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![d3boy2002](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/d3boy2002/32/6209_2.png) [@d3boy2002](https://forums.speedlife.net/u/d3boy2002)\ **Post date:** [February 28, 2013, 7:35am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/1 "2013-02-28T07:35:01Z")
Right, so I’m back to the rear seat thing again lol… I’m wondering if a rear strut bar added more structural rigidity than rear seats, or vice versa, and by how much? (On my old saab, my car understeered like ass after I took out the rear seats). ---
**Author:** ![bing](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bing/32/7211_2.png) [@bing](https://forums.speedlife.net/u/bing)\ **Post date:** [February 28, 2013, 7:41am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/2 "2013-02-28T07:41:17Z")
if you want, i’ll delete this thread so that you don’t ever have to answer for it in the future 🙂 ---
**Author:** ![Cadence](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cadence](https://forums.speedlife.net/u/Cadence)\ **Post date:** [February 28, 2013, 9:00am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/3 "2013-02-28T09:00:01Z")
please do. before he unleashes Pandora’s Box 2.0 SONLING version ---
**Author:** ![KA24Power](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ka24power/32/5595_2.png) [@KA24Power](https://forums.speedlife.net/u/KA24Power)\ **Post date:** [February 28, 2013, 9:23am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/4 "2013-02-28T09:23:28Z")
Bing, don’t delete it. He didn’t learn the first time. ---
**Author:** ![Cadence](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cadence](https://forums.speedlife.net/u/Cadence)\ **Post date:** [February 28, 2013, 9:31am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/5 "2013-02-28T09:31:18Z")
LOLOLOLOLOL okokook most legit way to really with no trolling for his answer: Go get yourself 3dmax or solidworks software or some engineering software to test chassis rigidity, rebuild the entire chassis to the spot weld, take out the back seats in the model and put in a strut bar, stress test. then put the seats back in . stress test again ---
**Author:** ![odrum](https://avatars.discourse-cdn.com/v4/letter/o/ecccb3/32.png) [@odrum](https://forums.speedlife.net/u/odrum)\ **Post date:** [February 28, 2013, 9:52am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/6 "2013-02-28T09:52:07Z")
The rear seats have an absolutely terrible youngs modulus, and are not attached to the chassis in structurally favorable areas. A strut bar (which is made of a much stronger material and can be preloaded) connects two sides of your suspension/chassis directly together. So the force inflicted on the chassis by the wheel through the suspension is then dispersed not only to that portion of the chassis (which is now stronger because of the box effect created by the strut bar) but is also absorbed by the strut bar itself and the portion of chassis attached on the opposing side. ---
**Author:** ![Mr\_Phonso](https://avatars.discourse-cdn.com/v4/letter/m/a87d85/32.png) [@Mr\_Phonso](https://forums.speedlife.net/u/Mr_Phonso)\ **Post date:** [February 28, 2013, 9:55am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/7 "2013-02-28T09:55:39Z")
> [@d3boy2002"](#): > > Right, so I’m back to the rear seat thing again lol… I’m wondering if a rear strut bar added more structural rigidity than rear seats, or vice versa, and by how much? (On my old saab, my car understeered like ass after I took out the rear seats). What the fuck? ---
**Author:** ![Benjai](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/benjai/32/6122_2.png) [@Benjai](https://forums.speedlife.net/u/Benjai)\ **Post date:** [February 28, 2013, 10:16am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/8 "2013-02-28T10:16:44Z")
> [@odrum](#): > > The rear seats have an absolutely terrible youngs modulus, and are not attached to the chassis in structurally favorable areas. A strut bar (which is made of a much stronger material and can be preloaded) connects two sides of your suspension/chassis directly together. So the force inflicted on the chassis by the wheel through the suspension is then dispersed not only to that portion of the chassis (which is now stronger because of the box effect created by the strut bar) but is also absorbed by the strut bar itself and the portion of chassis attached on the opposing side. The only serious answer you’re gonna get. I’ve heard JDM seats offer more structural rigidity and allow your car to achieve higher G-forces while pulling sick drifts. And you get mo’ bitches. ---
**Author:** ![RUSSKII](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/russkii/32/5696_2.png) [@RUSSKII](https://forums.speedlife.net/u/RUSSKII)\ **Post date:** [February 28, 2013, 10:23am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/9 "2013-02-28T10:23:33Z")
Lmao, how do you even come up with a question like this, clearly a strut bar is more rigid(less flexable) than the seats. Come on man. ---
**Author:** ![odrum](https://avatars.discourse-cdn.com/v4/letter/o/ecccb3/32.png) [@odrum](https://forums.speedlife.net/u/odrum)\ **Post date:** [February 28, 2013, 10:25am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/10 "2013-02-28T10:25:12Z")
> [@Benjai](#): > > The only serious answer you’re gonna get. > > I’ve heard JDM seats offer more structural rigidity and allow your car to achieve higher G-forces while pulling sick drifts. And you get mo’ bitches. Only serious because I’m sympathizing. Must be the weather. Ahaha, JDM seats don’t do shit for bitches while attending UOIT mang… ---
**Author:** ![Benjai](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/benjai/32/6122_2.png) [@Benjai](https://forums.speedlife.net/u/Benjai)\ **Post date:** [February 28, 2013, 10:29am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/11 "2013-02-28T10:29:17Z")
Yeah, you can’t advertise that. Just do what I do and mumble it so it sounds like UofT, then you can let that JDM suede work it’s magic. ---
**Author:** ![d3boy2002](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/d3boy2002/32/6209_2.png) [@d3boy2002](https://forums.speedlife.net/u/d3boy2002)\ **Post date:** [February 28, 2013, 10:40am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/12 "2013-02-28T10:40:05Z")
> [@odrum](#): > > The rear seats have an absolutely terrible youngs modulus, and are not attached to the chassis in structurally favorable areas. A strut bar (which is made of a much stronger material and can be preloaded) connects two sides of your suspension/chassis directly together. So the force inflicted on the chassis by the wheel through the suspension is then dispersed not only to that portion of the chassis (which is now stronger because of the box effect created by the strut bar) but is also absorbed by the strut bar itself and the portion of chassis attached on the opposing side. THANKS. lol. I was talking about like the softer street strut bars vs like really well mounted seats. I thought since the seats were mounted to both the bottom and the side (on cars I know, not the s13) it would be better for the bottom end rigidity and strengthening that would strengthen the sides a little too, letting the suspension forces dissipate into the chassis but not overworking it. I also thought seats would have helped with like the forward-back forces since strut bars only mount side-side. Oh yeah, and seats cover more area of the chassis lol but yeah I’m a dumbass. ---
**Author:** ![odrum](https://avatars.discourse-cdn.com/v4/letter/o/ecccb3/32.png) [@odrum](https://forums.speedlife.net/u/odrum)\ **Post date:** [February 28, 2013, 10:47am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/13 "2013-02-28T10:47:53Z")
goddamnit ---
**Author:** ![Cadence](https://avatars.discourse-cdn.com/v4/letter/c/9e8a1a/32.png) [@Cadence](https://forums.speedlife.net/u/Cadence)\ **Post date:** [February 28, 2013, 10:57am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/14 "2013-02-28T10:57:05Z")
bahahahaha ---
**Author:** ![d3boy2002](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/d3boy2002/32/6209_2.png) [@d3boy2002](https://forums.speedlife.net/u/d3boy2002)\ **Post date:** [February 28, 2013, 11:04am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/15 "2013-02-28T11:04:23Z")
I have better days I promise lol ---
**Author:** ![Benjai](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/benjai/32/6122_2.png) [@Benjai](https://forums.speedlife.net/u/Benjai)\ **Post date:** [February 28, 2013, 11:06am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/16 "2013-02-28T11:06:35Z")
![http://global3.memecdn.com/so-my-frend-said--who-is-bill-nye-and-im-like_c_914323.jpg](http://global3.memecdn.com/so-my-frend-said--who-is-bill-nye-and-im-like_c_914323.jpg) ---
**Author:** ![Mr\_Phonso](https://avatars.discourse-cdn.com/v4/letter/m/a87d85/32.png) [@Mr\_Phonso](https://forums.speedlife.net/u/Mr_Phonso)\ **Post date:** [February 28, 2013, 11:08am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/17 "2013-02-28T11:08:38Z")
![http://static.fjcdn.com/pictures/Quad_977075_2991176.jpg](http://static.fjcdn.com/pictures/Quad_977075_2991176.jpg) ---
**Author:** ![GetARide](https://avatars.discourse-cdn.com/v4/letter/g/e495f1/32.png) [@GetARide](https://forums.speedlife.net/u/GetARide)\ **Post date:** [February 28, 2013, 11:10am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/18 "2013-02-28T11:10:55Z")
Does your S13 even work? ---
**Author:** ![odrum](https://avatars.discourse-cdn.com/v4/letter/o/ecccb3/32.png) [@odrum](https://forums.speedlife.net/u/odrum)\ **Post date:** [February 28, 2013, 11:15am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/19 "2013-02-28T11:15:29Z")
come on phonso you’re better than posting broken links ---
**Author:** ![d3boy2002](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/d3boy2002/32/6209_2.png) [@d3boy2002](https://forums.speedlife.net/u/d3boy2002)\ **Post date:** [February 28, 2013, 11:52am UTC](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983/20 "2013-02-28T11:52:47Z")
> [@GetARide](#): > > Does your S13 even work? It’s running now, but it’s running really shit lol. Just a bit more work and I think it’ll all be k. 🙂 [Next page](https://forums.speedlife.net/t/rear-strut-bar-vs-rear-seat-structural-rigidity/228983.md?page=2)