Sumitomo HTR Z III 295/30ZR18
06-08-2010, 12:29 PM
#31
Three Wheelin'
Actually, they don't: 1477 lbs. (94) for the Sumis, 1653 lbs. (98) for the PS2s. The HTR-Z III is not an "XL" tire in that size.
There are a few other anomalies: the HTR-Z III weighs 30lbs in 295-30-18, but only 27lbs in 285-30-18. But, the smaller size is an XL tire and has a higher load rating (1609 lbs/97).
There are a few other anomalies: the HTR-Z III weighs 30lbs in 295-30-18, but only 27lbs in 285-30-18. But, the smaller size is an XL tire and has a higher load rating (1609 lbs/97).
06-08-2010, 12:32 PM
#32
Team Owner
06-08-2010, 12:42 PM
#33
Parts Specialist
Rennlist Member
Rennlist Member
06-08-2010, 01:41 PM
#36
Race Director
The letter N is an abreviation of the German word 'Norm', or standard.According to the article in Total 911,page 52,Issue 61.
06-08-2010, 01:43 PM
#37
Team Owner
06-08-2010, 01:51 PM
#38
Odd Posts
Rennlist Member
Rennlist Member
I need to order new tires ASAP and am debating the same thing...any other comments from anyone?
06-08-2010, 02:26 PM
#41
Parts Specialist
Rennlist Member
Rennlist Member
I was just bustin' yur chops....
06-08-2010, 02:56 PM
#42
Burning Brakes
Thread Starter
I debated on SUMI's 285 1600 lb @ 27 lb vs. the 295 1500 lb @30 lb. I wanted the extra tire to protect the rim and 100 lb load difference wasn’t a bad trade off. The tire grip feels much stronger than the 285 but that may be just the new tread. SL vs. Xl load rating were another issue since Porsche wants 44 psi in rear tires. The following stated that SL load could have a 44 psi rating for high performance tires. So far I am very pleased with the performance and ride.
http://www.tirerack.com/tires/tiretech/tirespecskey.jsp
For example, while a P-metric sized standard load tire's maximum load is rated at 35 psi, many P-metric sized standard load performance and touring tires are designed to contain up to 44 psi (and are branded on their sidewalls accordingly). This additional range of inflation pressure (in this case, between 36 and 44 psi) has been provided to accommodate any unique handling, high speed and/or rolling resistance requirements determined by the tire and vehicle manufacturers. These unique tire pressures will be identified on the vehicle placard in the vehicle's owner's manual."
http://www.tirerack.com/tires/tiretech/tirespecskey.jsp
For example, while a P-metric sized standard load tire's maximum load is rated at 35 psi, many P-metric sized standard load performance and touring tires are designed to contain up to 44 psi (and are branded on their sidewalls accordingly). This additional range of inflation pressure (in this case, between 36 and 44 psi) has been provided to accommodate any unique handling, high speed and/or rolling resistance requirements determined by the tire and vehicle manufacturers. These unique tire pressures will be identified on the vehicle placard in the vehicle's owner's manual."
06-08-2010, 03:13 PM
#43
Burning Brakes
Thread Starter
The letter N is an abreviation of the German word 'Norm', or standard.According to the article in Total 911,page 52,Issue 61.
06-08-2010, 03:51 PM
#44
Instructor
Join Date: Feb 2009
Posts: 102
Likes: 0
Received 0 Likes
on
0 Posts
After checking all the tire specs at Tire Rack site go to Sumitomo website and check there; you will be really confused.
It seems to me that the only sure way is to weigh and measure the tire yourself...
Anyways, I just got 295 Sumis and 225 fronts installed and they're great tires, thats for sure
It seems to me that the only sure way is to weigh and measure the tire yourself...
Anyways, I just got 295 Sumis and 225 fronts installed and they're great tires, thats for sure
