nazree360 Posted November 9, 2015 Share Posted November 9, 2015 I am currently running on 265/45/20 used on a Toyota Vigo and would like to know the best recommended tyre pressure for the above .....only for city use...feedback appreciated Link to comment Share on other sites More sharing options...
arthurwait Posted November 9, 2015 Share Posted November 9, 2015 Link to comment Share on other sites More sharing options...
IMHO Posted November 9, 2015 Share Posted November 9, 2015 Have a look at your tire pressure sticker, and tell us: What's the recommended pressure for the OEM tires? What's the load rating of the OEM tires? (e.g. 107T, 111H, 113S etc) What's the load rating of the new tires? Link to comment Share on other sites More sharing options...
arthurwait Posted November 9, 2015 Share Posted November 9, 2015 Ok take your truck for a drive, your normal driving. Measure temperatures across the tyre. Adjust tyre pressures so the temperatures across the tyre are even as possible. Then decide if you prefer the optimum use of tyre contact patch or a comfier ride. If it is the latter start letting air out your tyres until you feel it is comfy enough. Link to comment Share on other sites More sharing options...
nazree360 Posted November 9, 2015 Author Share Posted November 9, 2015 This is what is on my car but originally car came with the standard tyres and i changed it to a set of 20"s Link to comment Share on other sites More sharing options...
nazree360 Posted November 9, 2015 Author Share Posted November 9, 2015 Ok take your truck for a drive, your normal driving. Measure temperatures across the tyre. Adjust tyre pressures so the temperatures across the tyre are even as possible. Then decide if you prefer the optimum use of tyre contact patch or a comfier ride. If it is the latter start letting air out your tyres until you feel it is comfy enough. Noted but is there like a recommended pressure for the size i have ..... Link to comment Share on other sites More sharing options...
seedy Posted November 9, 2015 Share Posted November 9, 2015 My Google search turned up this info - http://mytirepressure.com/tire-sizes/265-45r20 Link to comment Share on other sites More sharing options...
NanLaew Posted November 9, 2015 Share Posted November 9, 2015 Calling transam for a cleanup in aisle three. Link to comment Share on other sites More sharing options...
nazree360 Posted November 9, 2015 Author Share Posted November 9, 2015 Calling transam for a cleanup in aisle three. Yeah awaiting a response from the GURU Link to comment Share on other sites More sharing options...
IMHO Posted November 9, 2015 Share Posted November 9, 2015 What is the load rating of the new tires? Link to comment Share on other sites More sharing options...
nazree360 Posted November 9, 2015 Author Share Posted November 9, 2015 What is the load rating of the new tires? Link to comment Share on other sites More sharing options...
IMHO Posted November 9, 2015 Share Posted November 9, 2015 What is the load rating of the new tires? ImageUploadedByThaivisa Connect1447041338.220574.jpg OK, 925KG means it's a load index of 105. The OEM tires have a load index of 104/106 - so the new tires are midway. That means you can just use the recommended pressures on the sticker above. Link to comment Share on other sites More sharing options...
nazree360 Posted November 9, 2015 Author Share Posted November 9, 2015 What is the load rating of the new tires? ImageUploadedByThaivisa Connect1447041338.220574.jpg OK, 925KG means it's a load index of 105. The OEM tires have a load index of 104/106 - so the new tires are midway. That means you can just use the recommended pressures on the sticker above. Thanks mate Link to comment Share on other sites More sharing options...
IMHO Posted November 9, 2015 Share Posted November 9, 2015 What is the load rating of the new tires? ImageUploadedByThaivisa Connect1447041338.220574.jpg OK, 925KG means it's a load index of 105. The OEM tires have a load index of 104/106 - so the new tires are midway. That means you can just use the recommended pressures on the sticker above. Thanks mate Just one thing - your 20" tires are rated for max. 50 PSI cold inflation pressure, but your tire label recommends up to 51 PSI. Do not exceed the tire rating of 50 PSI.... Link to comment Share on other sites More sharing options...
nazree360 Posted November 9, 2015 Author Share Posted November 9, 2015 What is the load rating of the new tires? ImageUploadedByThaivisa Connect1447041338.220574.jpg OK, 925KG means it's a load index of 105.The OEM tires have a load index of 104/106 - so the new tires are midway.That means you can just use the recommended pressures on the sticker above. Thanks mate Just one thing - your 20" tires are rated for max. 50 PSI cold inflation pressure, but your tire label recommends up to 51 PSI. Do not exceed the tire rating of 50 PSI.... Noted with thanks mate Link to comment Share on other sites More sharing options...
Jitar Posted November 9, 2015 Share Posted November 9, 2015 Pickups can use either commercial or car tyres. The OP's recommended pressures apply to light truck or commercial tyres, as shown by the "C" after the size. Commercial tyres are capable of higher load and pressure, compared to car tyres of the size and load index. The 265/45R20 car tyre will be fine at the same pressure for an empty or lightly loaded truck. Although the 20" tyres have the same load index as the 215/65R 16C tyres, the rears will be close to their limit if the truck was loaded to capacity, hence the 50psi limit. Would be wise to be careful how much load is on the rear axle if the truck is ever heavily loaded. Link to comment Share on other sites More sharing options...
nazree360 Posted November 9, 2015 Author Share Posted November 9, 2015 For starters, the max pressure written on the tyres is the max for a given application, your ride is well under that max pressure limit for your application. Recommended pressures om your original tyres are exactly that, for those tyres, nothing to do with your new set up. High end Vigos have 265 tyres with a 'recommended' pressure of 29 psi all round. If me I would go for that as starters. Unfortunately your loss in sidewall depth will affect comfort as stock 265/70x16 or 265/65x17 have more sidewall depth and flex. Thanks Trans .....will give it a go with 29 and adjust accordingly cheers mate ...Thanks a MILLION Link to comment Share on other sites More sharing options...
IMHO Posted November 9, 2015 Share Posted November 9, 2015 A 105 load index tire will lose 25KG+ of weight load capacity for every PSI down - be very cautious when lowering pressures. The only spec that matters in this case is weight load ability. Wheel diameter/width, tire width/aspect are meaningless. Safety first, right? Link to comment Share on other sites More sharing options...
Jitar Posted November 9, 2015 Share Posted November 9, 2015 (edited) 29 psi is pretty low for low profile tyres, sidewall may be vulnerable to damage and the front tyres will probably wear the shoulders from cornering. I found 32 - 35psi worked OK on a PJS with 275/55R 20 tyres. These are a taller tyres than the OP with a higher load index and less potential axle load than a pickup. YMMV (literally) Edited November 9, 2015 by Jitar Link to comment Share on other sites More sharing options...
nazree360 Posted November 9, 2015 Author Share Posted November 9, 2015 A 105 load index tire will lose 25KG+ of weight load capacity for every PSI down - be very cautious when lowering pressures. The only spec that matters in this case is weight load ability. Wheel diameter/width, tire width/aspect are meaningless. Safety first, right? Thata for sure..... Link to comment Share on other sites More sharing options...
BeefSlapper Posted November 9, 2015 Share Posted November 9, 2015 (edited) 37 -40 psi I would follow that sticker tho And maintain it every now and then. Saves tyres Sent from my SM-A800F using Tapatalk Edited November 9, 2015 by BeefSlapper Link to comment Share on other sites More sharing options...
nazree360 Posted November 13, 2015 Author Share Posted November 13, 2015 OP....Have talked to a friend in the 'know' and he suggests 33psi all round. Much to do with pot hole stuff in LOS and you 20's being feeerked.. Hey trans will try it out in about an hout and update ......thank you so much transam Link to comment Share on other sites More sharing options...
.png.3b3332cc2256ad0edbc2fe9404feeef0.png)
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now