Twoply 0 #1 January 20, 2008 I looked it up several times, but I'm not that smart. I need my hand held here. I need tires and rims for my trailer. The ones I have say 205-75-D14 So will a 215-75-14 fit on the rims? The first 3 numbers are the width of the tire, but is htere some kind of rule of thumb as to what rim you can put these on? And what the hell do they mean by the 2nd two numbers being about the ratio? Thanks all. Quote Share this post Link to post Share on other sites
floridadiver81 0 #2 January 20, 2008 QuoteI looked it up several times, but I'm not that smart. I need my hand held here. I need tires and rims for my trailer. The ones I have say 205-75-D14 So will a 215-75-14 fit on the rims? The first 3 numbers are the width of the tire, but is htere some kind of rule of thumb as to what rim you can put these on? And what the hell do they mean by the 2nd two numbers being about the ratio? Thanks all. as long as the last number is the same as your rim size...ie.....17 will fit on a 17 inch rim...16 on a 16 inch rim...you will be fine."Age has absolutely nothing to do with knowledge, learning, respect, attitude, or personality." -yardhippie "Fight the air, and the air will kick your ass!!! "-Specialkaye Quote Share this post Link to post Share on other sites
Twoply 0 #3 January 20, 2008 So the widths of the rims and tires are standard somehow? Quote Share this post Link to post Share on other sites
mnealtx 0 #4 January 20, 2008 QuoteI looked it up several times, but I'm not that smart. I need my hand held here. I need tires and rims for my trailer. The ones I have say 205-75-D14 So will a 215-75-14 fit on the rims? The first 3 numbers are the width of the tire, but is htere some kind of rule of thumb as to what rim you can put these on? And what the hell do they mean by the 2nd two numbers being about the ratio? Thanks all. 215 is the tread width in millimeters, 75 is the aspect ratio (sidewall is 75% of the tread width, in this instance). 14 is the size of the wheel it's made to go on. I'm not sure what the D is for. Usually you'll see a "P" (passenger), LT (light truck) or R (radial) there, as I recall.Mike I love you, Shannon and Jim. POPS 9708 , SCR 14706 Quote Share this post Link to post Share on other sites
mnealtx 0 #5 January 20, 2008 QuoteQuoteI looked it up several times, but I'm not that smart. I need my hand held here. I need tires and rims for my trailer. The ones I have say 205-75-D14 So will a 215-75-14 fit on the rims? The first 3 numbers are the width of the tire, but is htere some kind of rule of thumb as to what rim you can put these on? And what the hell do they mean by the 2nd two numbers being about the ratio? Thanks all. as long as the last number is the same as your rim size...ie.....17 will fit on a 17 inch rim...16 on a 16 inch rim...you will be fine. Incorrect. You have to look at the width of the rim and tire. Too wide of a tire on a narrow rim (or vise versa) could cause a blowout, or worse.Mike I love you, Shannon and Jim. POPS 9708 , SCR 14706 Quote Share this post Link to post Share on other sites
floridadiver81 0 #6 January 20, 2008 He stated that he knew about the first 2 numbers and wasnt sure about the last number. So i clarified him on what he wasnt sure about "Age has absolutely nothing to do with knowledge, learning, respect, attitude, or personality." -yardhippie "Fight the air, and the air will kick your ass!!! "-Specialkaye Quote Share this post Link to post Share on other sites
mnealtx 0 #7 January 20, 2008 Quote He stated that he knew about the first 2 numbers and wasnt sure about the last number. So i clarified him on what he wasnt sure about He probably doesn't have to worry much, going from a 205 to 215, that's true. They'll be a tiny bit taller, but probably not enough to worry about clearance in the fender wells of the trailer. I just wanted to make sure that the BASIC info he got was good.. I've seen someone try to shoehorn a 265 on a rim for a 175... not pretty.Mike I love you, Shannon and Jim. POPS 9708 , SCR 14706 Quote Share this post Link to post Share on other sites
airtwardo 7 #8 January 20, 2008 I just wanted to make sure that the BASIC info he got was good.. I've seen someone try to shoehorn a 265 on a rim for a 175... not pretty Quote We've all seen a fat chick in spandex...same thing! ~ If you choke a Smurf, what color does it turn? ~ Quote Share this post Link to post Share on other sites
Twoply 0 #9 January 20, 2008 Whats the rule of thumb for this? how much can you vary the width before it wont fit the rim? THanks again Quote Share this post Link to post Share on other sites
ChangoLanzao 0 #10 January 20, 2008 Quote I just wanted to make sure that the BASIC info he got was good.. I've seen someone try to shoehorn a 265 on a rim for a 175... not pretty Quote We've all seen a fat chick in spandex...same thing! You talkin' 'bout this one? Quote Share this post Link to post Share on other sites
mnealtx 0 #11 January 20, 2008 Quote We've all seen a fat chick in spandex...same thing! [Wink] Yeah, pretty close!!!! Mike I love you, Shannon and Jim. POPS 9708 , SCR 14706 Quote Share this post Link to post Share on other sites
upndownshop 0 #12 January 20, 2008 Are you sure its not a B instead of a D. B would mean Bias which was standard on many trailers back in the day. In regards to going to the 215, Mike is probably correct that it wont matter. But there are a few things to consider. Has someone else already gone to a larger tire, if so you are not going up just one size. You will need to make sure there is clearance above, the backside of the tire and the outside. You also have to make sure there is load clearance, for the weight that will lower the trailer down closer to the axle, thus reducing the tire clearance. There other factor is what Load carrying capacity is the tire capable of. Is it a C, D or E ply rating that you need??? The perfect plus one for the 205 75 14 would be a 215 70 14, which was original equipment on the 90 model of the ole ford rangers BTW...This would maintain the same height and only be 10mm wider. Sorry for the length but I was a district manager for 15 years in the wholesale and retail Tire industry.......Glad I am out of that job. I got tired of tires LOL hope that helps.. J I just noticed the image you have is for a P passenger tire so it will not have the Ply rating on it. Depending on the loads you are carrying it may not be a factor but my guess is you need a C rated tire. The 14" is for larger trailers of that time, assuming it is an older trailer. ok one more thing, look at the DOT number as shown in your pic. the last three numbers indicate the week and year the tire was made. The DOT is broken into a few sections consisting of letters and numbers in the first couple of sections. The last three numbers are usually "slightly" separated from the rest. Ex. 037 would mean it was built in the 3rd week of 2007, or 1997, 1987 etc. of course deductive reasoning would help you figure out which year it was actually built. Ok got to get back to SkyFest stuff..LOL Your tire retailer should be able to help you get the proper equipment. And remember, the only thing between the road and a ton of metal doing 60mph that enables you to keep control is your tires, they are not just rubber... Quote Share this post Link to post Share on other sites
mnealtx 0 #13 January 20, 2008 And something that we're ALL forgetting... If you upsize ONE tire on the trailer, you're gonna have to do them ALLMike I love you, Shannon and Jim. POPS 9708 , SCR 14706 Quote Share this post Link to post Share on other sites
upndownshop 0 #14 January 20, 2008 QuoteAnd something that we're ALL forgetting... If you upsize ONE tire on the trailer, you're gonna have to do them ALL Yup VERY important! Different sizes could cause serious damage and other major problems including serious accidents. BTW a 205 75 b 14 (C) is more popular size than the 215 so you might be able to almost buy two of the 205 for the price of one 215. Depending on where you go. Quote Share this post Link to post Share on other sites
twofast 0 #15 January 21, 2008 the 2nd set of #'s is the aspect ratio. 205/75 means that the height of the sidewall is 75% of the width of the tire. 205 * 75%= 154. a 205/50 tire would be the same width as a 205/75, but much shorter. 205 * 50%= 103. Quote Share this post Link to post Share on other sites
