{"id":9494,"date":"2018-06-04T04:34:12","date_gmt":"2018-06-04T11:34:12","guid":{"rendered":"https:\/\/speedsecrets.com\/?p=9494"},"modified":"2020-09-26T07:42:14","modified_gmt":"2020-09-26T14:42:14","slug":"q-will-lowering-tire-pressures-help-over-bumpy-surfaces","status":"publish","type":"post","link":"https:\/\/speedsecrets.com\/q-will-lowering-tire-pressures-help-over-bumpy-surfaces\/","title":{"rendered":"Q: Will lowering tire pressures help over bumpy surfaces?"},"content":{"rendered":"

Q: “<\/em><\/strong>I am driving a 2000 Porsche Boxster S at Porsche Autocross events and when I drive my Boxster over a bumpy section my Traction Control comes on and slows my car. I don’t have a switch to turn off the TC. To help with traction should I lower the tire pressure? Would raising the rear spoiler help with this issue as well? The spoiler raises at 75 mph but I can raise manually.”<\/em><\/p>\n

A: <\/strong>I want to answer by saying, \u201cGive it a try!\u201d That\u2019s actually the best answer because there\u2019s never one perfect solution that will work in all cases. If the only thing I could do was adjust tires pressures, and I wanted the car to absorb the bumps better, then yes I\u2019d start by going lower on the pressures. If that doesn\u2019t work, I\u2019d go the other direction and see what happens. It\u2019s possible that adjusting tire pressures will not be the solution, though. And it\u2019s possible that lower pressures will help over the bumps but hurt elsewhere – and you need to figure out whether the compromise is worth it.<\/p>\n

Also, I\u2019d suggest making some fairly large adjustments – like 4 psi at a very minimum, and even more like 6 psi (or more). Make a big change to find out if it helps. If it\u2019s heading in the right direction, then you can start fine-tuning with smaller adjustments. At first you\u2019re just looking for a direction – is it helping or hurting?<\/p>\n

As for aero with the spoiler, why not? In any autocross, I doubt that you\u2019ll ever be hurt by more downforce – the straightaways are not long enough for the aero drag to be a negative. So give it a try. It\u2019s possible that you won\u2019t feel much of a difference, but there\u2019s only one way to find out. Go for it \u2013 and learn.<\/p>\n

For more advice on how to tune your car’s handling – and tire pressures – download my free How to Tune Your Car’s Handling<\/em><\/strong><\/a> eBook here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Q: “I am driving a 2000 Porsche Boxster S at Porsche Autocross events and when I drive my Boxster over a bumpy section my Traction Control comes on and slows my car. I don’t have a switch to turn off the TC. To help with traction should I lower the tire pressure? Would raising the rear spoiler help with this issue as well? The spoiler raises at 75 mph but I can raise manually.”<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[57],"tags":[],"class_list":["post-9494","post","type-post","status-publish","format-standard","hentry","category-ask-ross"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/posts\/9494","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/comments?post=9494"}],"version-history":[{"count":5,"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/posts\/9494\/revisions"}],"predecessor-version":[{"id":32866,"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/posts\/9494\/revisions\/32866"}],"wp:attachment":[{"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/media?parent=9494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/categories?post=9494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/speedsecrets.com\/wp-json\/wp\/v2\/tags?post=9494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}