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Thread: Advice on Spring rates for 1UZ AE70 Corolla

  1. #11
    Moderator Sam-Q's Avatar
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    If the rear springs have too high a spring rate in proportion to the front then it will be more prone to oversteer. By fitting the 4 or 4.5Kg rears you may find that you will loose that balance you have now. I personally suggest fixing the actual tyre scrub issue instead of just trying to avoid it. I do find it odd that there is such a difference from having a passenger alone, well unless they really need to loose some weight.

    You are running 4.5Kg in the front right now?

    In the past on my AE86 I tried running 6kg front springs but the stiffness drove me crazy. I ended up choosing 4.9Kg / 275 Lb which I loved. But as you said the higher weight over the front end would have an effect on this, as for how much I have no idea.
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  • #12
    Senior Member qagzie's Avatar
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    Quote Originally Posted by Sam-Q View Post
    If the rear springs have too high a spring rate in proportion to the front then it will be more prone to oversteer. By fitting the 4 or 4.5Kg rears you may find that you will loose that balance you have now. I personally suggest fixing the actual tyre scrub issue instead of just trying to avoid it. I do find it odd that there is such a difference from having a passenger alone, well unless they really need to loose some weight. You are running 4.5Kg in the front right now?In the past on my AE86 I tried running 6kg front springs but the stiffness drove me crazy. I ended up choosing 4.9Kg / 275 Lb which I loved. But as you said the higher weight over the front end would have an effect on this, as for how much I have no idea.
    Thank you Sam-Q for your reply.

    So I removed the 3.1kg springs and put back the 5kg ones for the meantime to stop the scrubbing. But to my surprise, the car feels so much firmer to drive. Even better than before.

    Well, I've had some mods done...eg equal length 4 links, fitted pillow ball bushes on both ends of the panhard rod, coilovers [brand names faded off~ don't know who made them] etc. I admit I prefer how she feels now... but I'm still saving up for the 4.5kgs.

    Unfortunately I don't know what rate the front springs have, but there's no scrubbing at all [car sits low] my guess is 7~9kg

    Here's how she sits

    Click image for larger version. 

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    Last edited by qagzie; 23rd April 2019 at 04:30 AM.

  • #13
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    Max
    That is one nice ride. You nailed it!!!!
    Davew7

  • #14
    Senior Member qagzie's Avatar
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    Quote Originally Posted by davew7 View Post
    Max
    That is one nice ride. You nailed it!!!!
    Davew7

    thanks Davew7.
    Last edited by qagzie; 24th April 2019 at 03:03 AM.

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