Good-Carbuyer 1st Gear September 30, 2010 Share September 30, 2010 Maybe yr tire pressure too high. Try lowering it abit n see how. Also if e shocks r worn, e ride can b choppy as e wheel bil bounce abit after e bump. mercy-mercy, you are misleading him to endanger us ↡ Advertisement Link to post Share on other sites More sharing options...
Sohboonguan 1st Gear September 30, 2010 Share September 30, 2010 I am facing a problem with my car. My suspension is cheapo hotbits suspension with adjustable damper. The problem I am facing is that when I go at 160-170, the car is rather bumpy going on uneven roads. I am just afraid there could be wheel lift causing me to los control of the car. What could be the cause of this bumpiness? Could it be damper settings too soft, thus not absorbing the forces or too hard or do I need to change suspension. Btw, I didn't face this issue with a BMW E39 528i quite sometime back. Its using blistein suspension (not coilovers, just normal springs and dampers). Its quite stable even at 170-180. Of course, I do get quite a bit of body roll when cornering compared to my current Toyota. I know the right people to ask... They have expertise and often have alot of answer to your questions. They even have their very own Q&A section online. The forum people here knows nothing about anything travelling above 90km/h... Here you go, feel free to contact them... Email: [email protected] Contact: Traffic Police Department Address: 10 Ubi Avenue 3 Singapore 408865 Tel: 65 - 6 547 0000 Fax: 65 - 6 547 4900 Link to post Share on other sites More sharing options...
Haziqko Clutched October 1, 2010 Share October 1, 2010 They are standard 225/40/18 tyres. All 4 wheels have the same tyres. yup... low profiles will make u feel bumpier... Link to post Share on other sites More sharing options...
Krado Clutched October 2, 2010 Share October 2, 2010 I am just afraid there could be wheel lift causing me to los control of the car. http://www.mycarforum.com/index.php?showto...p;#entry3393974 No winners, cause both will crash and burn. When I challenge, I put my life down and prepare to die. [rolleyes] prepare to die? [rolleyes] Link to post Share on other sites More sharing options...
Pisces69 6th Gear October 2, 2010 Share October 2, 2010 mercy-mercy, you are misleading him to endanger us Why? If his tire-pressure is too high, hs car wil hv a bumpy ride. Where got mis-lead. Link to post Share on other sites More sharing options...
Thaiyotakamli Supersonic October 2, 2010 Share October 2, 2010 I am facing a problem with my car. My suspension is cheapo hotbits suspension with adjustable damper. The problem I am facing is that when I go at 160-170, the car is rather bumpy going on uneven roads. I am just afraid there could be wheel lift causing me to los control of the car. What could be the cause of this bumpiness? Could it be damper settings too soft, thus not absorbing the forces or too hard or do I need to change suspension. Btw, I didn't face this issue with a BMW E39 528i quite sometime back. Its using blistein suspension (not coilovers, just normal springs and dampers). Its quite stable even at 170-180. Of course, I do get quite a bit of body roll when cornering compared to my current Toyota. no toyota is stable at 160-170km/hr, its a law of physics my goodness sake toyota is meant for city driving a nd of course price is different la u stup*** later u buy qq and complain at 90km/h not firm and blame the suspension lol yes u say toyota and bmw may have same weight but has diff tech and dun u know that bmw or merc wsteering become heavy when its hitting 100km/h??? toyota 100 and above become more light Link to post Share on other sites More sharing options...
Mini-itx Clutched October 2, 2010 Author Share October 2, 2010 Why? If his tire-pressure is too high, hs car wil hv a bumpy ride. Where got mis-lead. Hmm.... tyres..... Why I never thought of that? Yes I usually over inflate my tyres to improve FC a little. I always pump 290Kpa. Maybe thats why its bumpy. Link to post Share on other sites More sharing options...
Mini-itx Clutched October 2, 2010 Author Share October 2, 2010 Did u do a 4 wheel computerised alignment after changing shocks. Wrong alignment settings can cause car to b jittery. No, my alignment is ok. Just did it 3 months back after change a wheel bearing. My problem is not car jittery or floating feeling. It just bumpy ride. Car jumps alot over bumps on the road. Its as if the suspension is not absorbing the bumps at all. However, it not bouncy (car not bouncing up and down which could indicate damper faulty). Thus I think my dampers are still OK. Link to post Share on other sites More sharing options...
Mini-itx Clutched October 2, 2010 Author Share October 2, 2010 BMW n Toyota handling not same. BM 160kmh very stable. Toyota wil feel disconnected with e road, especially in e corners. Did u only face e problem after changing yr suspension/shocks? Then they r to bame. Otherwise uts e cars fault. Nope, I don't have any problems with corners. In fact the Toyota's handling is far superior compared to the E39. Link to post Share on other sites More sharing options...
Mini-itx Clutched October 2, 2010 Author Share October 2, 2010 He drives a ST185 Celica GT-Four, which has rally pedigree but it is now 17 or 18 years old. Most aftermarket suspension is tunable but the problem is whether the owners know how to tune it properly. Else you can make the car handle worse than stock. How do you know I am driving a Celica? Link to post Share on other sites More sharing options...
Pisces69 6th Gear October 2, 2010 Share October 2, 2010 Hmm.... tyres..... Why I never thought of that? Yes I usually over inflate my tyres to improve FC a little. I always pump 290Kpa. Maybe thats why its bumpy. If yr tire-pressure sud b abt 210-220koa but u pump 290kpa, i think yr ride wil b very bumpy. Try to follow e manufacturers recommended pressure n maybe u can go abt 10-20kpa up/down from that. Too much n handling wil b greatly affected. Link to post Share on other sites More sharing options...
Pisces69 6th Gear October 2, 2010 Share October 2, 2010 Nope, I don't have any problems with corners. In fact the Toyota's handling is far superior compared to the E39. Then i guess e celias chassis/suspension is still in very good condition. Link to post Share on other sites More sharing options...
Kerwen 6th Gear October 2, 2010 Share October 2, 2010 maybe he is driving ae86 Link to post Share on other sites More sharing options...
Blackyv Turbocharged October 2, 2010 Share October 2, 2010 i think it was due to those "2005" old tyre lar.... already "harden" ..... Link to post Share on other sites More sharing options...
Good-Carbuyer 1st Gear October 2, 2010 Share October 2, 2010 (edited) Why? If his tire-pressure is too high, hs car wil hv a bumpy ride. Where got mis-lead. Surely safer for all of us if he drives at lower speed instead, if he is really that so ignorant Edited October 2, 2010 by Good-Carbuyer Link to post Share on other sites More sharing options...
Good-Carbuyer 1st Gear October 2, 2010 Share October 2, 2010 i think it was due to those "2005" old tyre lar.... already "harden" ..... His tire 2005 series? Safer to replace them with dynamic wheel balancing (had two nos. 6-year old tire burst experience: no fun in it) I would not be surprised if there is any carcass delamination humps on tire Link to post Share on other sites More sharing options...
Krado Clutched October 3, 2010 Share October 3, 2010 How do you know I am driving a Celica? http://www.mycarforum.com/index.php?showtopic=2654061 Hmmm.... So nice, my car is in your carpark too! Link to post Share on other sites More sharing options...
Tigershark1976 Turbocharged October 3, 2010 Share October 3, 2010 (edited) http://www.mycarforum.com/index.php?showtopic=2654061 Hmmm.... So nice, my car is in your carpark too! bro krado, what is it so nice about?? if i am u, i will park at another carpark + remind my family to watch out for any celica... bumpy road 170km/hr... carpark at least can reach 120km/hr... Edited October 3, 2010 by Tigershark1976 ↡ Advertisement Link to post Share on other sites More sharing options...
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