Bump steer....

A forum for lovers of Infiniti's hot-rod crossover, the FX! In 2014, all FX models will be named Infiniti QX70, in line with Infiniti's new naming structure.
chivo77
Posts: 5
Joined: Thu Jun 04, 2009 9:13 am
Car: Infiniti fx35

Bump steer....

Postby chivo77 » Thu Jun 04, 2009 9:21 am

I have 04 fx35 and if i hit a bump my truck goes to one side.Has a bad bump steer. Has anyone experience that.


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SteveTheTech
Posts: 4505
Joined: Sat Aug 16, 2008 3:20 pm
Car: 15 Sentra SR
12 G37x Coupe
-Formerly-
05 Mazda 6 L3 Sport, 95 J30, 94 D22
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Re: Bump steer.... (chivo77)

Postby SteveTheTech » Fri Jun 05, 2009 12:58 pm

Welcome to Nico chivo77

The FX w/ 20" rims may exhibit some bump steer on really bad road surfaces. I would advise you set your air pressure to 32-35psi and have an alignment done. If you are riding on larger rims energy tends to transfer through the steering linkage and may have an effect on steering.

You need to learn to anticipate this it is not going anywhere is considered normal under some conditions. Especially when the tires start to get worn. What type of tire are you running?Do you know how much tread is left?

Again I would like to welcome you to the group, and we will do everything possible to assist you the best we can but there is only so much that can be done.


chivo77
Posts: 5
Joined: Thu Jun 04, 2009 9:13 am
Car: Infiniti fx35

Re: Bump steer.... (SteveTheTech)

Postby chivo77 » Mon Jun 08, 2009 10:23 am

Thanks for responding. I have 265/50/20 hankook ventus st.Do you know if another brand may be a softer ride?Iam going to adjust the air pressure and see if that helps.Thanks again.

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SteveTheTech
Posts: 4505
Joined: Sat Aug 16, 2008 3:20 pm
Car: 15 Sentra SR
12 G37x Coupe
-Formerly-
05 Mazda 6 L3 Sport, 95 J30, 94 D22
Location: Chantilly, Va
Contact:

Re: Bump steer.... (chivo77)

Postby SteveTheTech » Mon Jun 08, 2009 2:09 pm

I have seen those tires on a few FXs they are one of the noisest tire options available. They wear so poorly (of the ones I have seen) and can make a horrible noise every time your slow down. It is very similar to the noise the G35 Coupe owners used to complain about, it has to do with the alignment and tread wear issues.

For a softer riding tire I would recommend something like the RSAs that come on the 20s or something along the lines of a Michelin, there are many options available in this size but be aware the lesser priced options will tend to wear funny. You want to look for a asymmetrical tire that can be cross rotated to even out wear and stick to a strict 7500 mile rotation interval.

I do not know if you read the M forum but there is allot of discussion there about the Goodyear RSAs available on their models. However on the FX is a great option if you get the ones with a raised circle on both sidewalls (there are 3 or 4 different sources for these tires and only a few of them are good).

chivo77
Posts: 5
Joined: Thu Jun 04, 2009 9:13 am
Car: Infiniti fx35

Re: Bump steer.... (SteveTheTech)

Postby chivo77 » Thu Jun 18, 2009 4:22 am

I adjusted the air pressure on my tires and that helped.Thanks for the advise....

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SteveTheTech
Posts: 4505
Joined: Sat Aug 16, 2008 3:20 pm
Car: 15 Sentra SR
12 G37x Coupe
-Formerly-
05 Mazda 6 L3 Sport, 95 J30, 94 D22
Location: Chantilly, Va
Contact:

Re: Bump steer.... (chivo77)

Postby SteveTheTech » Thu Jun 18, 2009 10:01 am

That's great to hear. What were the tires set at?


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