tire sizes

[8msteam]

i'm geting new rims to spruce up my jeep and i want new tires as well should i stick with stock size and how much bigger is a 30 inch tire then a stock tire or should i just get like a 225 insted of the 215. it's a daily driver the i will be driving around feilds and trails in the county. what size is the best and will it change the speedometer reading or anyting.

[drifto77]

30x9.50's will work GREAT! ;)

[REDXJ4FUN]

235s work as well

[incubi67]

with stock suspension height. do the 30x9.5 tires rub at all. under hard turns or anything?

[drifto77]

with stock suspension height. do the 30x9.5 tires rub at all. under hard turns or anything?

Nope, not at all. ;)
Stuff into the rear wheelwell just fine too.

[xjloop]

yeah if you havn't lifted it at all I wouln't go any bigger than 30's.Anything bigger (taller)than stock will affect your speedometer. I've got 31'S and my speedometer is 5 miles off.

[HaleYes]

with stock suspension height. do the 30x9.5 tires rub at all. under hard turns or anything?

I'm at 3in and my 30's do rub slightly at full turn.

[Slip Kid]

235 75R15 are good sized.

30s work but don't let anyone tell you they won't rub.

[scoobyxj]

yeah if you havn't lifted it at all I wouln't go any bigger than 30's.Anything bigger (taller)than stock will affect your speedometer. I've got 31'S and my speedometer is 5 miles off.

Yea when he is stopped his speedo says -5mph! :gag:
Sereously though mine's only off about a tenth of a mile with 31's @70. So YMMV on that one.

[8msteam]

i've been looking and saw in can get a minor lift like spring spacers and schakles for like a 1.5 inch lift and fit 30's with no proublm and will only throw me off like 2 or 3 mph right?

[BruteXJ]

BFG T/A ko's in the 30x9.50 size are the best tires you can fit on a stock XJ for street and mild trail use. These will not rub at all on the '99+ models (probably all models, but I won't guarantee it) as long as you keep your sway bars connected.

[Eagle]

Most people find that 30s rub, both on the lower control arms and at the top if the suspension is fully compressed. On the new body style (97+) 30s may also rub the lower trailing corner of the rear wheel openings.

The general rule is that 235/75R15 is the largest size that fits with no rubbing. Every once in awhile, though, someone will reort that even 235s rub the LCAs on sharp turns.

The 30x9.50 is only a fraction of an inch taller than a 235/75R15, but wider. Narrower is better for a daily driver (economy, and shedding water in rain). I would recommend 235/75 for the purpose described.

[8msteam]

thanks i'll proubly get the 235's but if i can get that lift kit that claims to fit the 30's then i'll go for it. but thanks for the help this site rocks.

[BOB]

Get a "budget boost" first. They're only a little over $100.00.

Once you start sizing up. You can't stop.

Then get the 30's

then start fender trimming,

and so on, and so on....

...BOB

[bajacalal]

I have had excellent results w/ my 30x9.5x15 tires on my 1995 xj on old wagoneer rims. They don't rub, the jeep is still fast even w/ 3.07 gears and I am still trying to figure out how much my speedo is off. I would have tried w/ police radar and those radar machines they set up to tell you your speed. At 50 mph its dead on 50.

[bjoehandley]

Dad had good luck with 235/75/R15"s on his '90, I'm even considering it on my '98 and my Sister's will get street tires that size before long too.

[BruteXJ]

Most people find that 30s rub, both on the lower control arms and at the top if the suspension is fully compressed. On the new body style (97+) 30s may also rub the lower trailing corner of the rear wheel openings.

The general rule is that 235/75R15 is the largest size that fits with no rubbing. Every once in awhile, though, someone will reort that even 235s rub the LCAs on sharp turns.

The 30x9.50 is only a fraction of an inch taller than a 235/75R15, but wider. Narrower is better for a daily driver (economy, and shedding water in rain). I would recommend 235/75 for the purpose described.

I hate to disagre with ya, Eagle, but I've got me and another here who've had not a whit of trouble with 30's on a '99 and a '00. Perhaps we were both blessed with those late in the year up-country springs?

[drifto77]

Perhaps we were both blessed with those late in the year up-country springs?
http://www.smiliegenerator.de/s27/smilies-7990.png

How do you know if you have 'em?

[bjoehandley]

Every once in awhile, though, someone will reort that even 235s rub the LCAs on sharp turns.

Dad's do, but that is at full lock with the p/s pump whining at full capacity though. He just doesn't turn that tight unless absolutely neccesary.

[bjoehandley]

Every once in awhile, though, someone will reort that even 235s rub the LCAs on sharp turns.

Dad's do, but that is at full lock with the p/s pump whining at full capacity though. He just doesn't turn that tight unless absolutely neccesary. His XJ does have 2" "skidmarks" on the part of the LCAs where they fold up from the bottom of the stamping though.

[BruteXJ]

http://www.smiliegenerator.de/s27/smilies-7990.png

How do you know if you have 'em?

No surefire way, really. You could measure vs. stock specs, or you could park next to another XJ of the same year and package and see if there's a noticable difference in height, I suppose. Neither would take into account any sag in the springs, though.

[drifto77]

"Originally Posted by BruteXJ
Perhaps we were both blessed with those late in the year up-country springs?"


I got saggy rears... any way to tell from the vin # ?
BTW... its a 99 Clasic.

[BruteXJ]

Not that I know of. I don't think they changed the vin when they substituted the springs. Maybe a different # of coils in the front? Eagle?

[drifto77]

THANKS. also forgot to say.... cant compaire it to a stock one by parking next to it due to a 2"bb.

[Only In A Jeep XJ]

I run 30's on my 99 xj and canyon wheels and never rubbed once now on my 87 xj i run 31's on canyons and stock suspension (only for two more weeks then the lift will be here) and rub on the speed bump at wally world