Is that asking too much? What does the tire sidewall say the max psi is? Our rigorous tests find the facts, and our impartial reviews tell you the truth about how products perform. It's important that your tyre is making the correct amount of contact with the road - over or under-inflated tyres mean less grip on the tarmac. This feels a little harsh over bumps, esp with an unladen wagon. 700 x 32 tyres would be ridden at 80-100 psi. So say you required 38psi before, its possible the new preferred air pressure to ensure optimum handling, and even wear on the tires is now 35psi. It's possible that the new tire calls for a couple psi less in each tire to support the same load. Keeping your tyre pressure where it's supposed to be can cut down on your fuel bills and make your car safer to drive. Is this stupid or smart. ), Press J to jump to the feed. Two main pressure measurements are used for car tyres – BAR and PSI. No Prius Podcasts. Please share as part of the Cartalk community. That 38 is from the door jam sticker. You need to look in the manual or the door jamb sticker. 2018 GSW 4motion 6MT Trendline. I have since rotated my tires and replaced 2 with contisportcontacts which have a slightly thicker tire diameter and tread and a max psi of 52. We only recommend cars that are reliable, economical, comfortable and safe to drive - here are the best new and used cars you can buy today. I feel like 38 should be a comfortable spot.. What kind of car is this? 2011 Golf TDi. You go by the sticker on the door jamb..that is what the tires should be set at, The max pressure listed on the tire itself is not the tire pressure setting for the vehicle...that is the setting for maximum loading the tire. And check your owners manual, see what it says. The car came with contiprocontact tires, which have a max psi of 46 i believe. do I adjust it according to the tires? That loss of braking and handling capability can negatively impact your safety on the road... so you get better gas mileage, but you're more likely to crash, especially in slippery conditions. We love those things. If you have an issue with your vehicle someone here can probably help you. So manufacturer specified tire pressure is 38 psi. ive typically overinflated my tires with the belief that less rolling resistance will increase mpgs and I know with most tires doing this would cause uneven wear but my tires look fine after driving thousands of miles on them like that and I dod believe I have had an increase mpgs but I can not be for sure. You can understand more and change your cookies preferences here. which in the top right corner lists the pressure in BAR in regards to partial and full loads. *For operations on slopes less than or equal to 11 degrees (20%) lateral slope. Name Size Pressure Range (psi/bar) XR0 26x1.90 35-65/2.4-4.5 XR0 26x2.10 35-65/2.4-4.5 XR1 Kids 20x1.85 30-50/2.1-3.4 XR1 Kids 24x1.85 30-50/2.1-3.4 Yes, you should follow this, never fill to max psi. This added pressure does nothing for load capacity. For more information, call 1-800-847-3364 *Grain Cart and Combine maximum in field speed allowable for up to … :D New car and tires also new (600mi) so perhaps they just need more break in time. Model Year of Manufacture Torque (N⋅m) Tyre Size Pressure Front (PSI) Pressure Rear (PSI) Placard Location Page; C30: 06 - 13: 110: 195/65R15: 33: 30: C30: 06 - 13 Do I just follow the specified psi by the manufacturer? Some tires list 44 psi and many higher speed tires will list 50-51 psi. For road riding, if the tyres feel soft then they need to be at a higher pressure. 700 x 38 tyres would be ridden at 70-90 psi. Tirerack says the standard tire for the alltack SEL is the Conti ProContactTX with a max cold inflation of 51psi. My S60R recommends 39 in the front 35 in the rear. Is this stupid or smart? Yeah, I bet. You will get some mpg boost from having overinflated tires. Thinking of upgrading your car? You have to look up a load chart for your OEM tire and find what load it handles at the factory psi, then find that load on the load chart for the new tire and find the corresponding psi. I dod believe I have had an increase mpgs but I can not be for sure. Looking for a reliable car? Never heard of any standard car with more than 36 psi as recommended. (low profile, stronger sidewalls,etc). Check your car manual to find the correct tyre pressure, and use our convertor tool if the measurements don't match the pump. I want every vehicle I own to drive just like my Mazda Miata except have a bigger trunk, or have room for 4, or haul a ton of rocks in the bed. Off road pressures are usually much lower. By using our Services or clicking I agree, you agree to our use of cookies. Have an answer or just a good tip? Some dipshit tire monkey that was installing the tires on my truck thought he should fill to the pressure indicated on the side of the tire several years ago. Each tire has its own Load Index, and references the maximum load for that tire to support. By continuing to browse you consent to our use of cookies. There are better ways to improve your mileage; put the proper pressure in your tires. 38 is crazy high. The car came with contiprocontact tires, which have a max psi of 46 i believe. We use cookies to allow us and selected partners to improve your experience and our advertising. *This recommended inflation pressure is the minimum required to carry the load and must be maintained. So, you lose some braking power, handling, and potentially some performance (if your car is powerful enough to make tire grip a factor in acceleration). Keeping your tyre pressure where it's supposed to be can cut down on your fuel bills and make your car safer to drive. 700 x 28 tyres would be ridden at 90-110 psi. I've seen light trucks where the standard is 80psi. I have a calculator at work that crunches the number for us. Peacock Green, Shetland Interior. You can use our converter to quickly change from one to another. If you get me the year/make/model of the vehicle and the load index of your new tires I'll let you know what is needed. Although, typically, the door placard is what you should follow. My cars recommended are 29 and 32. First month £5, then £9.99 per month, cancel anytime. You're currently browsing VWvortex site as a guest. USA ↔ European Tire Air Pressure Conversion Table. I have since rotated my tires and replaced 2 with contisportcontacts which have a slightly thicker tire diameter and tread and a max psi of 52. Glad I realized what he was doing and corrected him. It is likely that when you changed tire sizes you changed load index. Partial for my tires at the V speed rating (compared to H for the ones I have, they only show V) is 2.0 Bar or about 29/30 Psi, for a full load its 2.8 Bar or about 40 Psi. (We had to add that last part for good reason, sadly. For 225/40's, I'd expect the max inflation of the tires to be in the mid 50's. But the stupid part is that it comes with a cost: it reduces the contact patch of the tire, reducing your traction. Press question mark to learn the rest of the keyboard shortcuts, 68 F250 / 90 F350 / 05 Mercedes SLK / 13 Transit Connect. Continentals tend to have "softer" sidewalls, I usually have to run higher psi with them or they feel too squishy when cornering. It's important that your tyre is making the correct amount of contact with the road - over or under-inflated tyres mean less grip on the tarmac. This is the rec on the door jamb with the 18s on my car. This feels a little harsh over bumps, esp with an unladen wagon. Convert USA psi (lb/in 2) tire pressure readings into European bar or kPa tyre pressure readings, and vice versa from Euro to USA. Cookies help us deliver our Services. The tires are fairly low profile and of course I don't want to damage the wheels, but I also like my fillings where they are. Wow, 42psi is pretty high. Got a juicy car meme? I've found it depends a bit on the actual tire you're running too. 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