235 x 75 x 15

[myfirst Astro]

Hi
I was wondering if anyone out there has fitted 235x75x15 Goodrich tires on a standard Astro. (I know that 205x75x15 give a 762 revs per mile) will it throw my speedo out by a massive amount ?
My van is a 91 RWD Astro
Also are the Overland lift kits still available ?

Thanks
Andrew

[jeff's93astro]

I have a 87 safari with factory wheel with 255/70/R15 and mine is only 5mph off for example if the speedo says i'm running 55 i'm really running 60 but you cant turn very sharp cause they rub a little

[astro355]

The 235 75r15s have an overall tire height of 28.88". The 205 75r15s have an overall height of 27.11". If 255 70r15 with an overall height of 29.06" made the speedo off by only 5 mph, you will be fine.

[doyoulikeithere]

My 235 75 15s dont seem to make a huge difference at all, less than 5% I'd say I go past a cop in a 100K zone at 100K on my speedo and he dont bat an eye. Good enough for me!
Your biggest problem is going to be wheel rubs if you dont lift the van at least 2 inches on the front, and yes Dan still ships from Overland as far as I know.

[Mr_Bowtie]

I have a 87 safari with factory wheel with 255/70/R15 and mine is only 5mph off for example if the speedo says i'm running 55 i'm really running 60 but you cant turn very sharp cause they rub a little

So, your actually fitting a taller and wider tire then 235/75/r15 on stock suspension/ride height?
I really want to throw some 235/75/r15 tires on my stock wheels to give the Van a little more attitude......they seem like they would fit just fine, but I have yet to see anyone running those taller/wider tires sizes with stock ride height. Got any pics?

[doyoulikeithere]

Like I said, for the front tires to fit 235-75-15 you will need at least 2 inch lift for steering and bumps. The backs may fit but rubs are likely. I would go with a bit smaller but wider with the best off road type tread you can find in maybe a 70 or 60 series tire if you want to keep the stock ride or lower. 2 inch axle blocks , or shackles from overland will do the trick if your just doing the rear of your 2wd van with 235-75-15. Check out this site... http://www.1010tires.com/tiresizecalculator.asp

I have street 275 60 15 on the back, 245-60-15 front. and 4x 235-75-15 on my other van. Theres some pics in my user album here on the site, check it out. The red van in those pics has tiny 235-60-15s on the back, ick!

[Mr_Bowtie]

I will probably go 235/70/r15 just to stay stock height and not have to deal with rubbing. At least they will be a little wider!

[Mr_Bowtie]

Here is another tire size calculator:
http://www.miata.net/garage/tirecalc.html

[jeff's93astro]

I have a 87 safari with factory wheel with 255/70/R15 and mine is only 5mph off for example if the speedo says i'm running 55 i'm really running 60 but you cant turn very sharp cause they rub a little

So, your actually fitting a taller and wider tire then 235/75/r15 on stock suspension/ride height?
I really want to throw some 235/75/r15 tires on my stock wheels to give the Van a little more attitude......they seem like they would fit just fine, but I have yet to see anyone running those taller/wider tires sizes with stock ride height. Got any pics?

Yes its all factory matter of fact i bought it from the original owner the only thing i did was put new stock shocks on it cause the ones on it where weak after sitting 6 years he still had factory tire size on it all i did was put 255/70/R15 on it and the back dont rub at all and the front tires rub the sway bar at the front of the tire and they rub the part of the frame at the back of the tire but you still have 85% - 90% of your turning radius so i've not had a problem driving it on pavement nor dirt roads with the big tires keep a factory size wheel cause i used to have a set of 8 inch wide saw blade wheels on it and you can only open the sliding door about a foot.

[h2omelon]

I just put 235/75/15 BF Goodrich tires on my van today.They actually corrected my speedometer.Before it was off by 4mph and now it is dead on according to my gps.They don't scrub any at all and fill the wheel wells out a lot better.

[$uperJoe]

i run 235 75r15s on my 93. it is exactly on as far as speedo is concerned. where i live there is a speed limit sign with a screen above it to show your actual speed based on radar similar to the cops. there is about 25 of these signs through the town and every one says exactly what the speedo says i am doing

[95CargoVan]

Funny. I got my van about 6 months ago (1995). My van had/had 235 75 15 on all the wat around. I've never rubbed. Until I read this post I didn't know they weren't the factory size tire. I haven't gotten around to the tires yet.

[guyonearth]

Factory size is 205/75-15 on the older ones, and 215/75-15 on the later models. There was a 245/60-15 option at one point as well. 2003 and later have 16" wheels.

[myfirst Astro]

Hi There,

Do you have a lift kit on your van ? Also if you could post some pictures please

Thankyou

[Leeann_93]

Factory size is 205/75-15 on the older ones, and 215/75-15 on the later models. There was a 245/60-15 option at one point as well. 2003 and later have 16" wheels.

Actually, not totally true. I get to tell tire sites which tire I have all the time if they don't ask which model Astro I have: 205/75R-15 or 215/75R15.

My EXT passenger AWD van takes 215/75R15. The short box 2WD takes 205/75R15.

[myfirst Astro]

Hi Guys,
Well ..............................
I managed to get a good price on tires, $125 for 2 ... 215/75/15 firestone winter force tires.

They are the dogs what nots !!!!

They are working well on the rear of my 2wd Astro with 4 sand bags over the rear axle BRING IT ON (winter snow in BC Canada !)

Who needs 4WD ?

[kiwihawaii]

So it seems like 235/75/15 tires do actually fit on 15 inch Astro rims without rubbing?
I am curious because I want to buy some, but have read mixed results about them fitting.
Some have said you need to lift the van but others have said they are fine.
Are all Astro vans the same when it comes to space for these tires?
I have a 2002 Astro Cargo. Any input would be great!

[doyoulikeithere]

Yup. they are all the same. I have a 95 AWD van
I have 235-75-15 tires on steel astro rims. (not to be confused with 235-60, or 235-70 15 both of which are NOT as tall as 235-75)
The fronts rubbed pretty darn good if I hit bump going straight on, way worse if turning at the time. No bump but turning sharp they rub too.
My front was lifted about 2 inches at that time. Now its a 4 inch lift. and they still rub, a little bit, when I turn corners.

If I would go through a situation where one wheel was way UP in the well, and the other was way extended out from the well, One of The rear tires (up) rubbed into the front of the wheelwell so hard it tore lugs off the tire when I Only had 2 inch lift. 5 inches now and its no longer an issue at the rear.

So, I would imagine that a van with no lift should have a lot more issues with rubbing than I have had, but hey if you really really wanna try some on, be my guest...

I'm not clear on why on earth you would want to. A stock height van would ride and handle a lot better with tires of a diameter closer to stock.

I run 245-60-15 fronts and 275-60-15 rears on my stock height 2wd vans. The 275-60-15 are over tall but not as tall as the 235-75s. The wideness gives great traction compared to stock tires, and look nice.

[jeff's93astro]

(doyoulikeithere) why was you having such a hard time with 235/75 i had 255/70/r15 on my 87 with new shocks (oem replacements) and they only rubbed a little if you turned sharp and never rubbed over bumps

[doyoulikeithere]

(doyoulikeithere) why was you having such a hard time with 235/75 i had 255/70/r15 on my 87 with new shocks (oem replacements) and they only rubbed a little if you turned sharp and never rubbed over bumps

HI Jeff.
235 75 and 255 70 are not the same.
Yours are shorter and fatter enough to make a difference.