Geekzone: technology news, blogs, forums
Guest
Welcome Guest.
You haven't logged in yet. If you don't have an account you can register now.



927 posts

Ultimate Geek
+1 received by user: 8


Topic # 114030 5-Feb-2013 16:50 Send private message

Inside the car's petrol door it says front 28 and rear 26.  Got some new tyres, GT Radial 228 and the windscreen sticker says 38 for both.  What do you guys think?

View this topic in a long page with up to 500 replies per page Create new topic
 1 | 2 | 3
Voice Engineer @ Orcon
1794 posts

Uber Geek
+1 received by user: 387

Trusted
Orcon
Subscriber

  Reply # 756181 5-Feb-2013 16:54 Send private message

Are they low profile?



927 posts

Ultimate Geek
+1 received by user: 8


  Reply # 756183 5-Feb-2013 16:57 Send private message

Nope, same as the ones came with the car (auction) so dunno what they originally had. 205/60R/15.  The one we got from the auction was an import but the tyres were pretty newish, we got 2.5yrs out of them, all 4 approx even wear less a bit ... (fronts).  But replaced all 4's.  Within a 1mm front/rear.

487 posts

Ultimate Geek
+1 received by user: 3


  Reply # 756184 5-Feb-2013 16:57 Send private message

38 is way too hard for a passenger car.


You'd be fine running it at 28psi, you could even run it a tad higher around 30-32 if you prefer a firmer ride.

Voice Engineer @ Orcon
1794 posts

Uber Geek
+1 received by user: 387

Trusted
Orcon
Subscriber

  Reply # 756188 5-Feb-2013 17:03 Send private message

Agreed... some low profile tyres need high pressure but no way is that right for normal tyres.

I normally run 32 psi as I find it tightens things up a bit.

679 posts

Ultimate Geek
+1 received by user: 12

Trusted
Spark NZ

  Reply # 756192 5-Feb-2013 17:15 Send private message

I run 36 in my low profiles, no way you would want 38 in a standard passenger car. 28 sounds more realistic. Where did you buy them from?




All opinions are mine and mine alone, and do not represent the opinion of Spark.



927 posts

Ultimate Geek
+1 received by user: 8


  Reply # 756194 5-Feb-2013 17:18 Send private message

Paulhagerous - emailed ya the place.

679 posts

Ultimate Geek
+1 received by user: 12

Trusted
Spark NZ

  Reply # 756198 5-Feb-2013 17:28 Send private message

rayonline: Paulhagerous - emailed ya the place.


Reply sent.




All opinions are mine and mine alone, and do not represent the opinion of Spark.

410 posts

Ultimate Geek
+1 received by user: 40


  Reply # 756204 5-Feb-2013 18:03 Send private message

You should ask the people that sold/fitted the tyres? Im sure they wont mind, and would hardly have to think about it.



927 posts

Ultimate Geek
+1 received by user: 8


  Reply # 756260 5-Feb-2013 19:58 Send private message

Cheers all, will call them after Waitangi Day :)
Does feel a bit firmer, dunno how much thou.

A bit off topic, I've seen some cars (maybe euro) that specify a pressure of up to 42 when it's full load ....

434 posts

Ultimate Geek
+1 received by user: 12
Inactive user


  Reply # 756294 5-Feb-2013 20:49 Send private message

Interesting, my car recommends 32 at full load. When I last got new tires they put in 36 psi all round. They also put nitrogen in them though (without me asking). I wonder if nitrogen needs higher pressure? I left mine at 36 because I don't have nitrogen to adjust them.

Edit, nitrogen is indicated by green dust cover caps. (they also threw out my black valve caps and replaced them with these bright green ones indicating nitrogen without my asking)

1388 posts

Uber Geek
+1 received by user: 65


  Reply # 756308 5-Feb-2013 21:08

The manufacturer's recommended tyre pressure will be a compromise between noise, comfort. handling etc.

Many tyre fitters will go up a couple of pounds ignoring anything not tyre life or handling related.

2760 posts

Uber Geek
+1 received by user: 142

Trusted
Subscriber

  Reply # 756318 5-Feb-2013 21:26 Send private message

When I bought my car nearly a year ago the tyres had been inflated to 36 psi and the window sticker confirmed that was the correct pressure. However Kia's specification says 32 psi.

At one point I deflated them to 32 psi but noticed a deterioration in fuel economy which improved again when I put them back up to 36 psi.

It's possible that the perceived change in fuel economy was just a placebo effect, but this vehicle is supplied with low rolling resistance tyres in the NZ market so I suspect it's a case of those particular tyres needing to be run at higher pressure in order to get optimum benefit from them. I'll ask the dealer for clarification when I take it in for a service in a couple of months.

4740 posts

Uber Geek
+1 received by user: 117

Trusted

  Reply # 756334 5-Feb-2013 21:53 Send private message

alasta: When I bought my car nearly a year ago the tyres had been inflated to 36 psi

This happened to me after we changed tyres recently too.

7679 posts

Uber Geek
+1 received by user: 265

Trusted
Subscriber

  Reply # 756354 5-Feb-2013 22:21 Send private message

I got a couple of cheap Supercat 185/65R14 to replace my really badly worn out fronts from Firestone recently, they were pumped up to and they recommended 35psi

They pointed out the wear on my old types (which were some random brand) were mostly on the outer edges and was likely due running too low pressure over time.

2153 posts

Uber Geek
+1 received by user: 185

Subscriber

  Reply # 756468 6-Feb-2013 10:22 Send private message

I just got 2 new Bridgestone 215/55/R17 and they pumped them up to 36. He said that was recommended for best economy and wear

 1 | 2 | 3
View this topic in a long page with up to 500 replies per page Create new topic




Twitter »
Follow us to receive Twitter updates when new discussions are posted in our forums:



Follow us to receive Twitter updates when news items and blogs are posted in our frontpage:



Follow us to receive Twitter updates when tech item prices are listed in our price comparison site:




News »

Trending now »
Hot discussions in our forums right now:

Orcon Global Mode launched
Created by freitasm, last reply by deadlyllama on 30-Aug-2014 15:25 (117 replies)
Pages... 6 7 8


Suddenly limited to 1mbps download speed on spark VDSL
Created by Jase2985, last reply by Jase2985 on 30-Aug-2014 16:07 (42 replies)
Pages... 2 3


Vodafone TV multicast settings on pfSense?
Created by kenkeniff, last reply by kenkeniff on 27-Aug-2014 10:32 (182 replies)
Pages... 11 12 13


Another Gaming computer help question
Created by Lyderies, last reply by timmmay on 26-Aug-2014 18:06 (38 replies)
Pages... 2 3


Lightbox press event release
Created by freitasm, last reply by defragger on 29-Aug-2014 22:43 (561 replies)
Pages... 36 37 38


Lightbox quality comments
Created by ronw, last reply by redmouse on 30-Aug-2014 09:35 (52 replies)
Pages... 2 3 4


Recommendations for soundbar or similar for <$1k?
Created by jonathan18, last reply by michaelmurfy on 29-Aug-2014 21:11 (17 replies)
Pages... 2


Recommend a good value router with strong WiFi
Created by timmmay, last reply by timmmay on 27-Aug-2014 07:21 (32 replies)
Pages... 2 3



Geekzone Live »
Try automatic live updates from Geekzone directly in your browser, without refreshing the page, with Geekzone Live now.

Are you subscribed to our RSS feed? You can download the latest headlines and summaries from our stories directly to your computer or smartphone by using a feed reader.

Alternatively, you can receive a daily email with Geekzone updates.