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?
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.
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)
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.
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.
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