heyy guys i have a set of 16x7 rims for my 240sx that i use in the summer time … After winter, im planning to buy a new set of tires for the rims … I currently have 205/55/R16 on them … What would be the minimum and maximum tire size that I cud put on those 16x7 rims? Lets say id go with a sidewall size of 50 or 55, what widths (min & max) cud i go with?
thanks
mike
buy new wheels with baller offsets then buy tires. 17 x 8 or 9
done
k dude im not dishing out cash for new for wheels … tires yes because my tires that i have now (on my summers) are worn out so i need new tires … theres no point in gettin new wheels, the car is almost 19 years old and close to 300,000 kms on it … plus im saving up for a 350z dude, then ill have fun 
lol breaker77 not everyone can get vs-xx like u do. what size and offset are ur vs-xx? how many inches of lip are there?
nvmysx. for x7 u can run 225 max imo. but it gets slightly bulgy. 215 wuld be perfect. sideway… 55 50 45 watever pleases u.
205 55 16 is essentially the size you should be running, i’d stick with it, maybe drop down to a 50 in the front, but i wouldn’t go less than that in the back it effects your speedo and is annoying imo, wastes gas too
lucidsnow. so in your opinion, 225/55/R16 would be the max i shud go with the size of rim i have? Now would that be for all four rims?
heatw. i guess i can stick to my 205/55/R16 but i want to have a bit more grip with what i have.
how bout this? 215/55/R16 for the front and 225/55/R16 for the rear?
I have 16x7 +25s in the front with 205/55/16 Potenza RE01s… Have never chirped them or broken them loose, they look nice and square too.
http://www.onlineconversion.com/tire_size_conversion.htm
do some homework.
put in your stock tire size to get the diameter. then put in the size you want. try to get it dead on or as close as possible.
stock size on my s13 is 195/60R15 Front which = 24.2"
stock size on my s13 is 205/60R15 Rear which = 24.7"
a/m 16x7 Front 195/55R16 = 24.4"
a/m 16x7 Rear 205/55R16 = 24.9"
i’m going to go wider in the rear once the rears are done. but keep the same height and not to much bulge. there fore i am going to try and get a 245/45R16 which essentially puts me back to 24.7" in the rear.
plug and play some numbers. then look up a pic on the web of your size tire on your size rim to see if thats what your looking for.
i think a 245/45 is gonna have to much bulge to even fit proper. any one know?
If the tire u put on the rim is to large it will bulge on the sides and all that tire tread bulging won’t touch the ground properly and in essence you’ll have a smaller contact patch anyway, stick to a 205.
without even using that calculator thingy. i can tell you your diameters will be all f’ed up
I was pretty confused when the diameter increased by increasing the tire width. That simply does not make sense to me. Also I’ve seen 225/65/16 tires that are WAY wider than 225/60/15’s IRL. Can someone explain why?
About 2" in the front and 4" in the rear. Ballin!
k but i dont have stock tires on my 240sx … the tires i have on my aftermarket wheels (summer) are 205/55/R16 … so i guess i use that number and go from there right … i jus want to have a bit more grip than what i have without worrying of hittin the fender or it being too bulgy … from what i read in this thread so far, 215/55/R16 are my best bet and no more higher than that … or what if i reduce my sidewall height to 50 and i went with 215’s? would that be better or jus even as the other size?
k what if i went with a tire that was 50 on the sidewall instead of 55 and then used 215’s in front and 225’s in the rear?
Dude just go with 205s on a 7" and make sure they’re GOOD tires. It’ll make the world of a difference. For example, compare 205/55/16 Potenza RE01s to 215/55/16 Toyo Proxes TPTs; i ran both those tires last year.
That 10 mm difference wont mean shit. The RE01s are a much grippier tire and you’ll notice it.
Edit: What car is this for? KA? SR? just curious.
87s15lt1. i tried the calculator and this is what i got:
my current tire size: 205/55/R16 Front & Rear @ 24.9"
my new tire size: 225/50/R16 @ 24.9" or 245/45/R16 @ 24.7"
so my best bet here is the “225/50/R16” option right? those would be for the front … cud i use the 2nd option of having the “245/45/R16” in the rear? or jus stay 225/50/R16 all around? because i do want to have a bit of a wider tire in the rear for grip.
my car is a 1990 240sx with SOHC KA24E
i currently have Falken Ziex 912’s i believe with 205/55/R16
now im stuck with either going with Falken FK452’s or Federal 595’s …
Wider tires does not always mean more grip, i dont understand why you have to use that calculator. If the tires are too wide for your rims, you’ll get bulge and your tires will flex when you corner.
Go outside, look at your tires, are they square, bulged, stretched? Chances are they’re square. Just take the current size you have and go with some really good tires.
Dunlop Direzza Z1starspec
Toyo T1Rs
Bridgestone Potenza RE 01s, 070s 050s
Falken FK452s
Falken FK452s and Federal 595s are pretty far apart. Go with the 452s if you want grip and get them 205/55/16
oh my tires are pretty much square, there’s a very very faint bulge but not noticable from far … they are a lil bit stretched though because from lookin at the tire, the end of the tread doesnt line up equally with the edge of the rim
Okay, i think you’re a little confused.
You cant have stretch and bulge unless your tire is… well defective or old.
Stretch is when your tire is too thin relative to the rim
Bulge is when your tire is too wide relative to the rim.
Tread doesnt need to line up PERFECTly with the rim. Tire manufacturers use different standards when measuring their tires. a 205 from Toyo and a 205 from Bridgestone may not be the exact same width when seated on a rim.
Dont go anything larger than 215 on a 7 IMO.