Wjswingler Posted October 5, 2018 Share Posted October 5, 2018 Hi guys. Ive just had my aerotop done from a friend and i do not like its handling. I can feel all the bumps quite harsh and every bump i go over, even small ones like changing lanes and the cats eyes, the car feels like it wants to go everywhere. Quite sketch when youre doing 80+.. I dont hardly have to move the steering wheel and it turns pretty sharp. I cant quite explain it but it doesnt feel right. Ive had the arms on the front replaced new. The arms on the rear replaced. Only the upper and lower were replaced with 2nd hand ones. The ball joints were worn but they werent unusable. Just cant afford new ones yet. All these with new bushes also. Its also had front and rear bilstein b6 shocks and eibach springs. And the tracking done. Wheels are 18" with plenty of tread. Any ideas cause im not enjoying driving it at all.. Thanks Quote Link to comment Share on other sites More sharing options...
Scooter Posted October 5, 2018 Share Posted October 5, 2018 In no particular order. Tyre type, and have they had in the past or have now uneven wear (inner edges rounding off is common) Front Subframe bolts tight (although you sometimes notice a creak/knock) "tracking done" this can vary wildly depending on who did this.....I don't think many cars are as adjustable as the supra is and not all places understand or take the time to get it adjusted well. I presume it was a little off, hence the parts replacement, so is it any better or possibly worse now? If it still the same, what wheels and offsets (have you ever tried it with stock wheels) Quote Link to comment Share on other sites More sharing options...
evinX Posted October 5, 2018 Share Posted October 5, 2018 What offset wheels. What size tyres and pressure? Tie rods ok? My aerotops quite tight and holds nicely cornering etc. Also is the tunnel brace under the car still there? Also a full geometry should be done Quote Link to comment Share on other sites More sharing options...
Scooter Posted October 5, 2018 Share Posted October 5, 2018 Some threads to get stuck into http://www.mkivsupra.net/vbb/showthread.php?190343-Wandering-front-end-on-my-Supra&highlight=wandering http://www.mkivsupra.net/vbb/showthread.php?312021-Supra-wandering-all-over-the-road&highlight=wandering Quote Link to comment Share on other sites More sharing options...
Ric Posted October 5, 2018 Share Posted October 5, 2018 Just tracking or full alignment? you'd need the latter. Quote Link to comment Share on other sites More sharing options...
SupraTRD_MK4 Posted October 5, 2018 Share Posted October 5, 2018 audible knocks from suspension can be either control arm bushes, anti roll bar bushes, or even shock mountings at the top when worn will cause that noises. As for the loose wheel feeling, it could be many as mentioned above. If all that checks out, you should get someone clued up to check your wheel bearings. Worn shock absorbers can contribute to the above experienced as well. Again as mentioned, a reputable shop can test them for you. The toyota manual does indicate how to conduct the test. Quote Link to comment Share on other sites More sharing options...
Scooter Posted October 5, 2018 Share Posted October 5, 2018 Also who fitted the arms, someone you trust as they can be tighten at the wrong angle leaving the bushes preloaded which is not good, can affect ride height etc. The springs and shocks is a common combination and is highly unlikely to be the culprit. At a minimum a second opinion on the alignment is needed, try and find a specialist in your area. Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 5, 2018 Share Posted October 5, 2018 If you've changed the arms you need a full alignment doing on a set up like this Quote Link to comment Share on other sites More sharing options...
Wjswingler Posted October 6, 2018 Author Share Posted October 6, 2018 (edited) In no particular order. Tyre type, and have they had in the past or have now uneven wear (inner edges rounding off is common) Front Subframe bolts tight (although you sometimes notice a creak/knock) "tracking done" this can vary wildly depending on who did this.....I don't think many cars are as adjustable as the supra is and not all places understand or take the time to get it adjusted well. I presume it was a little off, hence the parts replacement, so is it any better or possibly worse now? If it still the same, what wheels and offsets (have you ever tried it with stock wheels) The wheels are 235/40R18 95W. I bought the car back in July and I've hardly driven it at all, it's spend 6 weeks off the road doing the arms so i cannot comment on what the wear was like before. It appears with what wear is on it, it does look likes its even. As for subframe bolts, I haven't checked them (I'm not mechanically minded) but I will get them checked over. We replaced the coils with Bilstein's and the springs with Eibach. I was told by my (not any more) "friend" that the ball joints were knackered and there was no point in just doing the springs. When I drove the car back from Leicester the day I bought it, I noticed it was over the road then with very load clonks. The clonks have since gone but it's still everywhere. I haven't tried it with stock wheels as I haven't got any. What offset wheels. What size tyres and pressure? Tie rods ok? My aerotops quite tight and holds nicely cornering etc. Also is the tunnel brace under the car still there? Also a full geometry should be done I'm not sure what the offsets are. They're 18". I have attached a photo of the wheels below. The Tie rods are ok as I bought them new. It's had new: -Front Upper and lower arms. Anti rollbar links and bushes. New track rod ends. -Rear upper and lower arms were replaced with 2nd hand ones. Bushes are new but the ball joints are ok. Rear Tie bar was brand new and the rear trailing arm had a new bush. The bush for the hubs weren't replaced though. Also had new rear anti rollbar links and bushes. Not sure on what a tunnel brace is but again another thing I'll look into. Some threads to get stuck into http://www.mkivsupra.net/vbb/showthread.php?190343-Wandering-front-end-on-my-Supra&highlight=wandering http://www.mkivsupra.net/vbb/showthread.php?312021-Supra-wandering-all-over-the-road&highlight=wandering Thankyou, I'll give them a read! Just tracking or full alignment? you'd need the latter. It was a 4 wheel alignment so I presume it does the camber, toe ect? Is this the same as a Geometry? Here are the results. audible knocks from suspension can be either control arm bushes, anti roll bar bushes, or even shock mountings at the top when worn will cause that noises. As for the loose wheel feeling, it could be many as mentioned above. If all that checks out, you should get someone clued up to check your wheel bearings. Worn shock absorbers can contribute to the above experienced as well. Again as mentioned, a reputable shop can test them for you. The toyota manual does indicate how to conduct the test. It's not giving me audible knocks now, but the ride is very hard I've noticed and it can be quite bouncy also. Not very pleasant I must say. Again all the control arm, arb bushes and shocks are new. Ideally I'd like a specialist to look at it, but the nearest one that I can find to me is TorqueGT and they're about an hour and a half away. And I'm sure will cost me a pretty penny! Also who fitted the arms, someone you trust as they can be tighten at the wrong angle leaving the bushes preloaded which is not good, can affect ride height etc. The springs and shocks is a common combination and is highly unlikely to be the culprit. At a minimum a second opinion on the alignment is needed, try and find a specialist in your area. It was someone that I trusted, a friend but since we have fallen out as he has damaged my bumper and so on. Not one to take criticism !! It did feel like the rear was lower than the front when I first got in it. I wouldn't be surprised if the bushes are preloaded. I did mention it to him as I saw it in a video but doubt he did it right.. If you've changed the arms you need a full alignment doing on a set up like this I saw a few threads on this, apparently Chris from CentreGravity was very good but I'm not sure I need to drive nearly 200 miles to get it done! I'll have to see if there are any locals ones in my area. Are there any clued up members or tuners close to Exeter on here? Edited October 6, 2018 by Wjswingler (see edit history) Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 6, 2018 Share Posted October 6, 2018 I wasn't suggesting you need to use Chris at C G but somewhere with a similar set up that knows what works on the mkiv Quote Link to comment Share on other sites More sharing options...
Wjswingler Posted October 6, 2018 Author Share Posted October 6, 2018 Yeah I know, I just don't want to take it to some cowboys Wasted enough money on them lol Quote Link to comment Share on other sites More sharing options...
Dnk Posted October 6, 2018 Share Posted October 6, 2018 (edited) Here's the set up on my car which worked very well Why doesn't your printout have castor figures ?Toyota Supra centre gravity info.pdf Edited October 6, 2018 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
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