Mining tire size 18.00-25 vs 18.00R25

Mining tire size 18.00-25 vs 18.00R25 is a construction choice on the same nominal diameter, not two random catalog names. 18.00-25 is the bias marking wholesalers use. 18.00R25 is the radial marking. Buy 18.00R25 when haul trucks or service units run farther and heat shows on the shoulder. Buy 18.00-25 when the pit is slow, cut-heavy, and the last radial sliced before it wore. Neighbor sizes in the same mining programs include 16.00-25, 16.00R25, 18.00R33 and 24.00R35. Confirm E3 or E4, tube-type or tubeless, and dual matching before you compare prices. If the machine plate says one family, do not “upgrade” the letter R to chase a cheaper hyphen quote.

Buyers paste 18.00-25 into a chat and receive an 18.00R25 offer back. That looks helpful. It is a different carcass. You can only treat them as alternatives after you check the rim, the machine, and the failure mode. Mining service trucks, smaller rigid dumps, and some loaders all touch this diameter. The job still has to be named.

The mining tire category already lists 16.00-25 / 18.00-25 together, and dump pages list 18.00r25 E4 as its own line. Use those pages as a size map. Then freeze one marking per SKU in your warehouse.

Key takeaways

• Hyphen 18.00-25 means bias in normal wholesale language. R25 means radial.
• Heat-led hauls usually want 18.00R25. Cut-led, slow pits often keep 18.00-25.
• 18.00R33 and 24.00R35 are not “bigger versions” of this debate. They are other machines.
• Duals must match. Do not pair one bias 18.00-25 with one 18.00R25.
• Write E3/E4 and TT/TL on the same line as the size, or the quote is not comparable.

What mining tire size 18.00-25 vs 18.00R25 marks on the sidewall

Mining tire size 18.00-25 vs 18.00R25 marks section, construction, and rim diameter. The 18.00 is the nominal section. The 25 is the rim diameter in inches. The hyphen versus the letter R is the construction flag you cannot ignore. If a quote drops the R and the hyphen, ask the desk to put one of them back before you approve packing.

You will also see nearby stamps: 16.00-25 as a common step-down, 14.00R25 on smaller dumps, and 18.00R33 when the truck class jumps. Those are not substitutes. A 18.00R33 E4 dump tire is a different machine decision. Keep it off this RFQ line.

ISO’s earth-mover tyre standards overview (2023) is the index for this product class. Use it when you need the standards family, not when you need a compound. Link: ISO ICS 83.160.99.

Which construction to buy for a mining haul versus a mining pit floor

Choose 18.00R25 when the unit spends real time on a maintained haul road, speed climbs, and previous tires show heat at the shoulder. Choose 18.00-25 when the floor is broken rock, speed stays low, and previous radials died from cuts with tread left. Service trucks that crawl around a face often stay bias. Production dumps that run a longer cycle usually move radial.

CDC/NIOSH mining pages (2024) keep repeating a point tire buyers skip: the road is part of the machine. A washboard haul will cook either construction. Read the NIOSH mining site when you write the site sentence that sits next to 18.00R25.

If you already know the marking and only need pattern and packing, send size, quantity and destination port through Baowu contact. State “bias 18.00-25” or “radial 18.00R25” in the first line, not in a later voice note.

How mining tire size 18.00-25 vs 18.00R25 should appear on a quote grid

Mining tire size 18.00-25 vs 18.00R25 should appear on a quote grid as two rows, not one cell. Put each construction on its own row. Add tread code, quantity, and the machine type (dump, service truck, loader). Then you can compare two factories. If one factory only offers the radial, that is an availability fact. It is not proof the radial is correct.

Factor	Option A	Option B	Best for	Watch-out
Size stamp	18.00-25 bias	18.00R25 radial	Bias for slow, cut pits; radial for longer, hotter hauls	Quotes that omit hyphen and R
Neighbor size	16.00-25 / 16.00R25	18.00R33 / 24.00R35	Step-down on smaller units; step-up only with the OEM size	Using 18.00R33 as a “stronger 18.00-25”
Tread	E3	E4	E3 mixed duty; E4 when rock haul needs more tread	Changing tread and construction in the same revision
Fitment	Single	Dual	Duals matched in construction and wear	One bias inner, one radial outer
Tube	TT with flap	TL	Match the rim currently on the truck	Packing flaps into a TL-only line

Bottom line: treat 18.00-25 and 18.00R25 as two SKUs that share a diameter. Buy the one that matches the failure you have. If you need both for two pits, stock both under two bin names.

The dump truck tire list is the right place to see 18.00r25 E4 beside 18.00-33 E4. Those two diameters are easy to mix in a spreadsheet. They are not easy to mix on a hub.

What to inspect before you accept a substitution

Substitution requests arrive when one construction is out of stock. Accept a switch only after you check four things: rim, machine clearance, dual mate, and the last failure mode. A cheaper 18.00-25 is not a gift if the truck was cooking 18.00R25 on a long coal haul.

Ask for a sidewall photo of the exact production tire, not a catalog render. Baowu’s quality control check is size, pattern and appearance before packing. Put the marking you approved in that photo request (18.00R25, not “18.00 dump”).

UNECE vehicle regulations (2024) will not pick your mining construction. They still matter if the same container also carries highway TBR sizes. Keep mining lines and highway lines on separate packing rows. Index: UNECE vehicle regulations.

How wholesalers should warehouse 18.00-25 and 18.00R25 without mixing them

Print the full stamp on the bin card. Do not write “18.00 mining.” Fitters grab the first 25-inch carcass that looks thick. That is how a radial dual gets a bias partner.

If you import mixed OTR, keep 18.00-25, 18.00R25, 16.00-25 and 18.00R33 on four lines of the packing list. Ask for loading photos from the photo gallery style of yard shots, and for a packing list that repeats the R or the hyphen on every line.

Questions buyers still ask

Is mining tire size 18.00-25 vs 18.00R25 just a typing difference?

No. The hyphen size is the bias marking. The R size is radial. Quotes that treat them as one SKU are not comparable. Freeze one marking before you talk price.

Can I mount 18.00R25 on a truck that currently runs 18.00-25?

Only if the rim, clearance and dual mates support that construction and you are converting the set, not one tire. Do not mix them on a dual. Confirm with the machine side before you approve a “radial upgrade” on a bias fleet.

Is 18.00R33 a better 18.00R25?

No. 18.00R33 is a different diameter and usually a different truck class. It is not a heavier version of 18.00R25. If the OEM size is 25-inch, stay on 25-inch unless the machine documentation says otherwise.

Do I need E4 on both constructions?

Not automatically. E4 is a tread-depth / rock-haul choice. Construction is a carcass choice. You can have E3 radial and E4 bias. Write both codes. If you only know the rock is sharp and the haul is short, say that and freeze one pair of codes after the first reply.

What else belongs on the RFQ besides the size stamp?

Application (dump, service truck, loader), quantity, destination port, TT/TL, and whether the fitment is dual. Add one-way haul if you have it. Attach a photo of the failed tire if heat or cut is the whole reason you are switching constructions.